In a displacement reaction, 0.050 mol of zinc metal reacts with 0.075 mol of copper(II) sulfate solution. If the reaction is carried out in a calorimeter with a heat capacity of 2.50 kJ K⁻¹, calculate the temperature change of the solution assuming the reaction is 100 % exothermic and the enthalpy change for the displacement is –30.0 kJ mol⁻¹.

The temperature rises by 0.60 K.

The correct option is temperature change: correct Unit 4.5 answer for Energy transfer during exothermic and endothermic reactions. It directly supports the approved learning objective to describe the required practical to investigate variables that affect temperature changes in reacting solutions such as acid plus metal, acid plus carbonate, neutralisation and displacement reactions. (AT 1, AT 3, AT 5, AT 6). This keeps the answer anchored to Energy transfer during exothermic and endothermic reactions within Exothermic and endothermic reactions, and avoids mixing energy transfer, reaction profiles, activation energy, chemical cells, fuel cells, exothermic reactions and endothermic reactions unless the objective names them.