In an experiment, excess magnesium powder is added to 50 cm3 of 0.25 mol dm-3
iron(ll) sulphate solution. The thermochemical equation is shown below,
Mg(s) + Fe2+ (aq) à Mg2+ (aq) + Fe (s) ΔH = -80.6 kJ mol - 1
What is the change in temperature?
[ Specific heat capacity of solution : 4.2 J g-1 0C-1 . Density of solution : 1 g cm-3 ]
(ans: 4.8 oC)