When ammonium chloride is heated it decomposes and 176 kJ of energy is taken in. What can be deduced about the reaction in which ammonia and hydrogen chloride form ammonium chloride?
It is exothermic and 176 kJ176\ \text{kJ}176 kJ of energy is given out
It is exothermic and 88 kJ88\ \text{kJ}88 kJ of energy is given out
It is endothermic and 176 kJ176\ \text{kJ}176 kJ of energy is taken in
It is endothermic and 88 kJ88\ \text{kJ}88 kJ of energy is taken in
40 exam-style questions on AQA GCSE Chemistry 6.2 Reversible reactions and dynamic equilibrium, covering 6.2.1 Reversible reactions, 6.2.2 Energy changes and reversible reactions, 6.2.3 Equilibrium, 6.2.4 The effect of changing conditions on equilibrium, 6.2.5 The effect of changing concentration, 6.2.6 The effect of temperature changes on equilibrium, and 6.2.7 The effect of pressure changes on equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.