My resources now cover the whole of OCR AS Chemistry.
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A set of five problems to practise identifying organic compounds from % composition, infrared (IR) spectroscopy and mass spectrometry. This type of exercise is good preparation for exam questions on identifying organic compounds using combined spectroscopic techniques. It could also be used for revision or consolidation of IR spectroscopy and mass spectrometry, as well as for assessment for learning.
Full answers to all the problems are provided.
This resource was developed primarily for the OCR A level Chemistry specification but is useful for all specifications. It relates to the following sections :
AS: Module 4 – Core organic chemistry
Part 2 – Alcohols, haloalkanes and analysis
4.2.4 Analytical techniques
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Content covered
• Calculating empirical formula from % composition
• Calculating molecular formula from empirical formula and molar mass, using the molecular ion peak on the mass spectrum
• Using the infrared (IR) spectrum to identify bond stretches and hence functional group(s) present
• Drawing structural formulae consistent with the molecular formula and IR data
• Using mass spectrum to distinguish between the suggested structural formulae
• Identifying fragments in the mass spectrum
Duration: 1 part lesson and/or independent study
Links
Please see also:
Topic 46 - infrared (IR) spectroscopy – OCR AS Chemistry
https://www.tes.com/teaching-resource/infrared-ir-spectroscopy-ocr-as-chemistry-12315096
Topic 47 - mass-spectrometry – OCR AS Chemistry
https://www.tes.com/teaching-resource/mass-spectrometry-ocr-as-chemistry-12287938
Get this resource as part of a bundle and save up to 43%
A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.
Bundle
Core organic chemistry bundle
This bundle covers all of the OCR A level chemistry specification section 4.1 (basic concepts and hydrocarbons) and 4.2 (alcohols, haloalkanes and analysis). The resources included are: - Introduction to organic chemistry - Naming hydrocarbons (includes quiz – A Question of naming alkanes) - Functional groups – names and formulae - Isomerism - Organic reagents and types of reaction - Introduction to alkanes - Reactions of alkanes - Alkenes - Polymers from alkenes - Chemistry of alcohols - Haloalkanes - Organic synthesis - AS synthetic routes - Infrared spectroscopy - Mass spectrometry - Identifying compounds from infrared and mass spectra Each topic includes a fully interactive PowerPoint including starter, group activities, questions and plenary along with a worksheet. Answers to all exercises are provided. Some of the resources include a PowerPoint quiz and all are ideal for classroom or home learning. This bundle is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 4– Core organic chemistry Part 1 – Basic concepts and hydrocarbons (all) Part 2 - Alcohols, haloalkanes and analysis (all) **Please review!** **Content covered: Introduction to organic chemistry** • Why carbon is special • Bonding in organic compounds • Different types of formulae • Types of organic compounds • Functional groups and homologous series **Naming hydrocarbons** • Application of IUPAC rules of nomenclature for systematically naming organic compounds • Naming alkanes and cycloalkanes • Naming branched alkanes • Naming alkenes and branched alkenes Quiz – A Question of naming alkanes **Functional groups – names and formulae** • Application of IUPAC rules of nomenclature for systematically naming organic compounds • Practice naming organic compounds including those with functional groups • Revision of empirical and molecular formula and how to calculate them • Formulae of compounds with functional groups Displayed formula Structural formula Skeletal formula **Isomerism** • Shapes of alkanes (with model building) • Definitions of structural isomers, stereoisomers, E/Z isomers and cis-trans isomers • Classification of isomers with examples • Structural isomers including chain, position and functional group isomers • Shapes of alkenes (with model building) • Restricted rotation around the C=C double bond • Stereoisomers – E/Z and cis-trans isomers • Animated illustrations of E/Z isomers • Criteria for E/Z isomerism and for cis-trans isomerism with examples and learning check • Cahn-Ingold-Prelog rules for naming E/Z isomers with examples **Organic reagents and types of reaction** • Ways of breaking covalent bonds Homolytic fission Heterolytic fission • Types of organic reagents and their reactions Nucleophiles Electrophiles Radicals • Introduction to mechanisms • Curly arrows • Types of reaction Addition Substitution Elimination • Classification of reactions **Introduction to alkanes** * Sources and uses of alkanes * Definitions of fossil fuels and crude oil * Uses of alkanes as fuels * Bonding in alkanes * Formation and rotation of sigma bonds * Shapes of alkanes * Intermolecular forces in alkanes in terms of non-polar molecules * Melting and boiling points of alkanes in terms of London forces * Effect of chain length and branching on London forces **Reactions of alkanes** * Reactivity of alkanes * Combustion of alkanes – complete and incomplete * Balancing combustion equations * Radicals and dot-and-cross diagrams * Radical chain reactions * Radical substitution of alkanes by halogens * Mechanism including initiation, propagation and termination * Limitations to the use of radical substitution in synthesis of halogenoalkanes **Alkenes** * Structure and reactivity of alkenes * The nature of the double bond – sigma and pi bonds * Explanation of restricted rotation around C=C * Shape of ethene in terms of electron pair repulsion theory * Addition reactions of alkenes * Reactions of ethene and propene including addition of halogens, steam, hydrogen halides and hydrogen * Test for alkenes with aqueous bromine * Catalytic addition of hydrogen - mechanism * Margarine manufacture * Definition of electrophile * Electrophilic addition mechanism * Addition of HX to unsymmetrical alkenes - Markownikoff’s rule and explanation **Polymers from alkenes** * Meaning of the terms addition polymer and monomer * the formation of poly(ethene) * General equation for polymer formation * Identifying the monomer from the repeat unit of the monomer * Disposal of waste polymers by recycling, cracking and combustion * Bioplastics * Biodegradable polymers * Photodegradable polymers **Chemistry of alcohols** * Comparing methods of making ethanol * Naming alcohols * Physical properties of alcohols, in terms of hydrogen bonding * Primary, secondary and tertiary alcohols * Substitution reaction of alcohols * Oxidation of alcohols * Elimination (dehydration) reaction of alcohols * Reactions of primary, secondary and tertiary alcohols * Animated mechanisms * Reaction classification * Reagents and conditions * Structural equations * Key definitions **Haloalkanes** * Naming haloalkanes * Reactivity of haloalkanes general equation for polymer formation * Uses of haloalkanes * Nucleophilic substitution reactions of haloalkanes including hydrolysis * Mechanism of nucleophilic substitution * Experiment to compare rates of hydrolysis of different haloalkanes * Explaining the different rates of hydrolysis * Organohalogen compounds and the environment * Destruction of ozone by CFCs **Organic synthesis** * Revision of functional groups * Techniques for preparation and purification of organic liquids * Heating under reflux * Distillation * Separation of immiscible liquids using a separating funnel * Use of drying agents * Stages in the preparation and purification of an organic liquid * Tests for functional groups * Compounds with more than one functional group * Strategies for organic synthesis with examples **AS synthetic routes** * AS synthetic routes * Animated mechanisms * Key definitions * Heating under reflux * Distillation * Reaction classification * Reagents and conditions * Structural equations **Infrared spectroscopy** * Introduction to spectroscopy linked to the electromagnetic spectrum * Meaning of wavenumber and transmittance * Molecular vibrations * Bond stretching * Fingerprint region of spectrum * Types and shapes of peaks * Infrared and global warming * The greenhouse effect and greenhouse gases * Interpreting the infrared spectrum * Examples of IR spectra with animated explanation linking peaks to structure * Uses of infrared spectroscopy **Mass spectrometry** * Animated diagram and description of a mass spectrometer * Meaning of m/z * Relative intensity * Base peak * Molecular ion * M+1 peak * Fragments * Interpreting the mass spectrum * Mass spectrum of ethanol * Animations of formation of fragments from ethanol * Summary of fragments for ethanol * Examples of mass spectra with animated explanation linking peaks to structure * Interpretation of mass spectrum of unknown compound leading to its identification **Identifying compounds from infrared and mass spectra** * Calculating empirical formula from % composition * Calculating molecular formula from empirical formula and molar mass, using the molecular ion peak on the mass spectrum * Using the infrared (IR) spectrum to identify bond stretches and hence functional group(s) present * Drawing structural formulae consistent with the molecular formula and IR data * Using mass spectrum to distinguish between the suggested structural formulae * Identifying fragments in the mass spectrum
£27.00
Bundle
Alcohols, haloalkanes and analysis bundle OCR AS Chemistry
This bundle covers all of the OCR A level chemistry specifications section 4.2 (alcohols, haloalkanes and analysis) The resources included are: - chemistry of alcohols - haloalkanes - organic synthesis - AS synthetic routes - infrared spectroscopy - mass spectrometry - identifying compounds from infrared and mass spectra Most of the resources include a fully interactive PowerPoint including starter, group activities, questions and plenary along with a worksheet. Many of the PowerPoint slides contain links to other slides, to enable easy navigation and to emphasise links between different aspects. Some of the resources include a PowerPoint quiz and all are ideal for classroom or home learning. The synthetic routes resource covers AS organic synthetic routes through a 15 slide interactive PowerPoint that is based on a clear chart of numbered synthetic routes, where each number is linked to a page detailing that reaction. Information given includes type of reaction, reagents and conditions and an equation, as well as key definitions. In addition most reactions have an animated mechanism or structural equation. There are links to pages describing and explaining practical techniques, where relevant. Also included is a resource consisting of a set of five problems to practise identifying organic compounds from % composition, infrared (IR) spectroscopy and mass spectrometry. Full answers to all exercises are provided. This bundle is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 4– Core organic chemistry Part 2 –Alcohols, haloalkanes and analysis (all) **Please review!** **Content covered: Chemistry of alcohols** • Comparing methods of making ethanol • Naming alcohols • Physical properties of alcohols, in terms of hydrogen bonding • Primary, secondary and tertiary alcohols • Substitution reaction of alcohols • Oxidation of alcohols • Elimination (dehydration) reaction of alcohols • Reactions of primary, secondary and tertiary alcohols • Animated mechanisms • Reaction classification • Reagents and conditions • Structural equations • Key definitions **Haloalkanes** • Naming haloalkanes • Reactivity of haloalkanes general equation for polymer formation • Uses of haloalkanes • Nucleophilic substitution reactions of haloalkanes including hydrolysis • Mechanism of nucleophilic substitution • Experiment to compare rates of hydrolysis of different haloalkanes • Explaining the different rates of hydrolysis • Organohalogen compounds and the environment • Destruction of ozone by CFCs **Organic synthesis** • Revision of functional groups • Techniques for preparation and purification of organic liquids • Heating under reflux • Distillation • Separation of immiscible liquids using a separating funnel • Use of drying agents • Stages in the preparation and purification of an organic liquid • Tests for functional groups • Compounds with more than one functional group • Strategies for organic synthesis with examples **AS synthetic routes** • AS synthetic routes • Animated mechanisms • Key definitions • Heating under reflux • Distillation • Reaction classification • Reagents and conditions • Structural equations **Infrared spectroscopy** • introduction to spectroscopy linked to the electromagnetic spectrum • meaning of wavenumber and transmittance • molecular vibrations • bond stretching • fingerprint region of spectrum • types and shapes of peaks • infrared and global warming • the greenhouse effect and greenhouse gases • interpreting the infrared spectrum • examples of IR spectra with animated explanation linking peaks to structure • uses of infrared spectroscopy **Mass spectrometry** • animated diagram and description of a mass spectrometer • meaning of m/z • relative intensity • base peak • molecular ion • M+1 peak • fragments • interpreting the mass spectrum • mass spectrum of ethanol • animations of formation of fragments from ethanol • summary of fragments for ethanol • examples of mass spectra with animated explanation linking peaks to structure • interpretation of mass spectrum of unknown compound leading to its identification **Identifying compounds from infrared and mass spectra** • Calculating empirical formula from % composition • Calculating molecular formula from empirical formula and molar mass, using the molecular ion peak on the mass spectrum • Using the infrared (IR) spectrum to identify bond stretches and hence functional group(s) present • Drawing structural formulae consistent with the molecular formula and IR data • Using mass spectrum to distinguish between the suggested structural formulae • Identifying fragments in the mass spectrum
£16.00
Bundle
Analytical techniques bundle OCR AS Chemistry
**New version - updated to include complete lessons on infrared spectroscopy and mass spectrometry!** If you have already paid for this resource you can download it again without extra payment. **My resources now cover the whole of OCR AS Chemistry.** Each download includes a list of all available lessons and bundles. This bundle covers all of the OCR A level chemistry specification section 4.2.4 (analytical techniques) The resources included are: - infrared spectroscopy - mass spectrometry - identifying compounds from infrared and mass spectra This is a unique package of interactive PowerPoint and paper-based activities that can be used for independent self-study, revision or in the classroom. These resources cover AS infrared (IR) spectroscopy and mass spectrometry through two interactive PowerPoint presentations, which are colourful, animated and present the information in a flexible way. Many of the PowerPoint slides contain links to other slides, to enable easy navigation and to emphasise links between different aspects. A method for interpreting infrared and mass spectra is given, in each case illustrated by animated examples with spectra and structures to aid understanding of the process. Also included are two graded worksheets including problems where unknown structures are identified. The third resource consists of a set of five problems to practise identifying organic compounds from % composition, infrared (IR) spectroscopy and mass spectrometry. Full answers to all exercises are provided. This bundle was developed primarily for the OCR A level Chemistry specification but is useful for all specifications. It relates to the following section: AS: Module 4 – Core organic chemistry Part 2 – Alcohols, haloalkanes and analysis 4.2.4 Analytical techniques **Please review!** **Content covered: Infrared spectroscopy** • introduction to spectroscopy linked to the electromagnetic spectrum • meaning of wavenumber and transmittance • molecular vibrations • bond stretching • fingerprint region of spectrum • types and shapes of peaks • infrared and global warming • the greenhouse effect and greenhouse gases • interpreting the infrared spectrum • examples of IR spectra with animated explanation linking peaks to structure • uses of infrared spectroscopy **Mass spectrometry** • animated diagram and description of a mass spectrometer • meaning of m/z • relative intensity • base peak • molecular ion • M+1 peak • fragments • interpreting the mass spectrum • mass spectrum of ethanol • animations of formation of fragments from ethanol • summary of fragments for ethanol • examples of mass spectra with animated explanation linking peaks to structure • interpretation of mass spectrum of unknown compound leading to its identification **Identifying compounds from infrared and mass spectra** • Calculating empirical formula from % composition • Calculating molecular formula from empirical formula and molar mass, using the molecular ion peak on the mass spectrum • Using the infrared (IR) spectrum to identify bond stretches and hence functional group(s) present • Drawing structural formulae consistent with the molecular formula and IR data • Using mass spectrum to distinguish between the suggested structural formulae • Identifying fragments in the mass spectrum
£6.50
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Again my students love your stuff. Are you going to do resources for OCR A2. Again happy to pay
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excellent
Excellent resource. Well laid out for students to follow during remote learning. Thanks for sharing.
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