AQA Physical Chemistry 2

Welcome to your AQA Physical Chemistry 2

When sulphur dioxide is formed from sulphate ions, what is the change in oxidation number of sulphur?

Which of the following orders is correct such that the first compound has the most negative lattice enthalpy and the last has the least?

What causes a difference in theoretical and Born Harber lattice enthalpies?

What can be said about entropy change when solid ammonium chloride decomposes to ammonia and hydrogen chloride gas?

The rate of a reaction is not affected by a change in concentration of a reactant X. What is the order of the reaction with respect to X?

A reaction is first order with respect to reactant X and second order with respect to reactant Y. If the concentration of X is doubled and the concentration of Y is tripled, by what factor has the rate increased?

The reaction rate increases 9 times by tripling the concentration of reactant A. What is the order of the reaction with respect to A?

A mixture has a total pressure 2 kPa, contains 0.2 mol of nitrogen and has 0.6 mol of oxygen. What is the partial pressure of nitrogen gas in the mixture?

Which of the following do not affect the value of Kp?
I. Temperature
II. Pressure
III. Concentration

What is the effect of increasing Kp on the equilibrium of a reaction?

What material is used as an electrode of a standard hydrogen electrode (SHE)?

Which of the following statements is true?

Which of the following affect the Ecell?
I. Concentration
II. Temperature

Which of the following statements is incorrect?

Assuming complete dissociation, what is the pH of 0.5M potassium hydroxide (KOH)?

What is acidic buffer is made of?