Neutralisation Calorimetry

50 cm3 of 1.0 mol dm-3 hydrochloric acid was added to 50 cm3 of 1.0 mol dm-3 sodium hydroxide solution.

The temperature rose by 6.8C. Calculate the enthalpy of neutralisation for this reaction.

Assume that the density of the solution is 1.00 g cm-3, the specific heat capacity of the solution is 4.18 J g-1 K-1. (2.s.f.)

100 cm3 of 0.200 mol dm-3 copper sulphate solution was put in a calorimeter and 2.00 g of magnesium powder added.

The temperature of the solution rose by 25.1°C. Work out which reagent was in excess and then calculate the enthalpy change for the reaction.

Assume that the density of the solution is 1.00 g cm-3, the specific heat capacity of the solution is 4.18 J g-1 K-1. Ignore the heat capacity of the metals. (3.s.f.)

25 cm3 of 2.0 mol dm-3 nitric acid was added to 25 cm3 of 2.0 mol dm-3 potassium hydroxide solution. The temperature rose by 13.7°C.

Calculate the enthalpy of neutralisation for this reaction.

Assume that the density of the solution is 1.00 g cm-3, the specific heat capacity of the solution is 4.18 J g-1 K-1. (3.s.f.)

50 cm3 of 2.0 mol dm-3 hydrochloric acid was added to 50 cm3 of 2.0 mol dm-3 ammonia solution.

The temperature rose by 12.4C.

Calculate the enthalpy of neutralisation for this reaction.

Assume that the density of the solution is 1.00 g cm-3, the specific heat capacity of the solution is 4.18 J g-1 K-1.(3.s.f.)

50 cm3 of 1.0 mol dm-3 nitric acid was added to 20 cm3 of 1.0 mol dm-3 barium hydroxide solution.

The temperature rose by 7.9C. Calculate the enthalpy of neutralisation for this reaction (per mole of nitric acid reacting).

Assume that the density of the solution is 1.00 g cm-3, the specific heat capacity of the solution is 4.18 J g-1 K-1. (3.s.f.)

50 cm3 of 0.10 mol dm-3 silver nitrate solution was put in a calorimeter and 0.2 g of zinc powder added.

The temperature of the solution rose by 4.3°C. Work out which reagent was in excess and then calculate the enthalpy change for the reaction (per mole of zinc that reacts).

Assume that the density of the solution is 1.00 g cm-3, the specific heat capacity of the solution is 4.18 J g-1 K-1. Ignore the heat capacity of the metals. (3.s.f.)