Chemistry 9701/53 Oct Nov 2015 | Cambridge AS Level Past Papers With Mark Scheme

1. Comparison of halogenoalkanes' reactivity with hydroxide ions based on bond polarity and bond strength, experimental setup using silver nitrate precipitation, and hazards associated with halogenoalkanes.

2. Equilibrium constant determination for N2O4 and NO2 system, using concentration data to calculate \\( K_c \\), anomaly identification, and graphical analysis for equilibrium studies.

3. Effect of temperature changes on equilibrium composition and \\( K_c \\), enthalpy implications, pressure impact on equilibrium shifts, and theoretical predictions for equilibrium line behavior.

4. Accurate measurement of precipitate mass to assess reactivity in halogenoalkane reactions, including experimental improvements for reliability and safety precautions in laboratory settings.

5. Experimental analysis of starting concentrations for equilibrium systems, stoichiometric calculations for reactant-product ratios, and impact of external conditions on dynamic equilibrium.