OCR A Level Chemistry Titrations Workbook 1 (AS, Year 12) with Mark Schemes

Try 13 pages free first → https://www.tes.com/teaching-resource/resource-13614715

Short summary: A 49-page step-by-step workbook for OCR A (H432) AS titrations: 10 skills, 59 OCR-style questions, a 50-mark exam paper and full mark schemes.

Description:

Want to look inside first? Download the free 13-page sample, which includes an OCR-style exam question and a model answer: https://www.tes.com/teaching-resource/resource-13614715

Titration calculations are where OCR A students lose easy marks: a missing zero in a burette reading, forgetting to scale up, or rounding too early. This workbook breaks every titration question into 10 small skills and builds them one at a time.

Each skill has four parts:

Learn it: the rule, with the key words highlighted
See it: a fully worked example, shown as step cards and a road map
Check it: what OCR examiners say: common mistakes and examiner tips from OCR examiners’ reports, plus “What OCR adds”, the extra twists OCR puts on each skill
Try it: OCR-style questions with mark allocations that get harder, then a set of “OCR twist” exam-style questions

The exam section puts everything together in a 50-mark paper in OCR’s style, with multiple-choice and structured questions. Every question has a full answer and an OCR-style mark scheme, with ECF and “ALLOW / DO NOT ALLOW” guidance.

Ideal for Year 12 independent study, homework, revision, intervention or PAG 2 follow-up. Written for OCR A H432 (and H032): 2.1.3 Amount of substance, 2.1.4 Acids and PAG 2.

What’s inside (49 pages):

Doing the titration (PAG 2): apparatus, standard solution, method
Burette readings and titres
Concordant titres and the mean titre
Significant figures and rounding
Percentage uncertainty
Moles in a solution: n = c × V
The mole ratio
Scaling up from the portion titrated
The final step: concentration, Mr, x, % purity, mg
When it goes wrong: errors and their effect

Plus: skills tracker, 50-mark exam paper, answers and mark schemes.

Not secure on moles yet? Start with the Amount of Substance workbook (AS): https://www.tes.com/teaching-resource/resource-13627199

Next steps: Titrations 2 (A2, Year 13: redox, back titrations and pH curves): https://www.tes.com/teaching-resource/resource-13614636. Free Titration Survival Sheet (road map, checklist and top 5 mistakes): https://www.tes.com/teaching-resource/resource-13627145

Licence: one teacher may copy for their own students; please do not share or upload. Written for OCR A H432; not endorsed by OCR.

Keywords / tags: OCR A level chemistry, H432, titration, titration calculations, AS chemistry, Year 12 chemistry, amount of substance, moles, PAG 2, acid base titration, percentage uncertainty, concordant titres, chemistry workbook, chemistry revision, mark schemes