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(a)In an experiment to determine the molar heat of reaction when magnesium displaces copper, 0.15 g of magnesium powder were added to `25.0cm^3` of 2.0M copper (II) chloride solution. The temperature of copper (II) chloride solution was `25^0C`,while that of the mixture was `43^0C`.
(i) Other than increase in temperature, state and explain the observations which were made during the reaction.
(ii)Calculate the heat change during the reaction (specific heat capacity of the solution=`4.2jg^-1K^-1`and the density of the solution=1g/`cm^3`
(iii) Determine the molar heat of displacement of copper by magnesium (Mg=24.0)
(iv) Write the ionic equation for the reaction.
(v) Sketch an energy level diagram for the reaction.
(b)Use the reduction potentials given below to explain why a solution containing copper ions should not be stored in a container made of zinc.