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Chemistry 9CH0/03 May June 2019 | Edexcel A Level Past Papers With Mark Scheme

1. Brønsted-Lowry acid definition and conjugate pairs – Identifying acid-base pairs in a reaction between ethanoic acid and methanoic acid.

2. Standard electrode potential of silver half-cell – Determining experimental conditions and errors in a setup measuring Ag⁺/Ag electrode potential.

3. Synthesis of esters – Designing a reaction pathway to produce propyl propanoate starting from 1-bromopropane.

4. Identification of an unknown salt – Analyzing experimental data to deduce the cations and anions present in a pink crystalline solid.

5. Redox chemistry of transition metals – Balancing equations and explaining oxidation states in manganese reactions.

6. Rate determination of ammonia decomposition – Graphical analysis and kinetic calculations for the catalytic breakdown of ammonia using tungsten.

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Classification: Edexcel Paper 3
Page count: 32
Viewed: 54
Last update: 3 months ago
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