Chemistry 9701/22 May June 2012 | Cambridge AS Level Past Papers With Mark Scheme

1. Chlorine reactions with elements from the third period, specific chemical behaviors of chloride formation, and predictions for argon’s reactivity.
2. Reactions of Na, Al, and Si chlorides with water, pH levels of resulting solutions, and understanding the nature of the reactions involved.
3. Bond angles in sulfur-nitrogen compounds, determination of lone pairs of electrons, and explanation of bond angles in molecules like S₄N₄.
4. Calculating standard enthalpy changes for methanol and synthesis reactions, explanation of reaction conditions like temperature, pressure, and catalyst.
5. Chemical reactions of malic acid, types of reactions it undergoes, and its commercial uses. Stereochemistry and isomerism in malic acid and its derivatives.
6. Functional group identification using chemical tests for alcohols, aldehydes, carboxylic acids, ketones, and esters, molecular structures, and calculations based on given data for organic compounds.