Chemistry Past Questions and Answers

In which of the following is the entropy change positive?

If a reaction is exothermic and there is a great disorder, it means that

In the preparation of oxygen by heating KClO₃ in the presence of MnO₂, only moderate heat is needed because the catalyst acts by

The graph above demonstrate the effect of

2H_2(g) + O_2(g) → 2H₂O_(g) ΔH = -ve
what happens to the equilibrium constant of the reaction above if the temperature is increased?