Question Library

In which of the following is the entropy change positive?

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

2H2(g) + O2(g) ⇌ 2H2O(g) ΔH = -ve what happens to the equilibrium constant of the reaction above if the temperature is increased?

C(s) + H2O(g) → H2(g) + CO2(g) ΔG for the reaction above at 1300k is -43KJ. At this temperature, the reaction is?

Two equal bulbs, one containing ammonia and the other nitrogen are opened mouth - to - mouth to each other at room temperature. The entropy in the mixture of gases is likely to?

A catalyst increase the rate of a chemical reaction by providing a path that?

CuO(s) + H\(_2\)(g) ↔ Cu(s) + H\(_2\)O(g) What is the effect of increasing the pressure on the equilibrium reaction above?

H\(_2\)(g) + Br\(_2\)(g) → 2HBr(g) The above reaction is carried out at 25\(^0\)C. ΔH is -72 kJ mol-1 and ΔS is - 106 J mol-1K-1, the reaction will?

Study carefully the reaction represented by the equation below. 2H2O 2(l) → O 2(g) + 2H2O(l). Which of the following will not reaction increase the reaction rate?

1.1 g of CaCI2 dissolved in 50 cm3 of water caused a rise in temperature of 3.4°C. The heat of reaction, ∆H for CaCI2 in kj per mole is? (Ca = 40, CI = 35.5, specific heat of water is 4.18 jk-1)