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 Form 4 Energy Changes in Chemical and Physical Processes Questions and Answers

A beaker contained 75.0 cm3 of aqueous copper(II)sulphate at 23.70C. when scrap iron metal was added to the solution, the temperature rose to 29.30C.
a) Write an ionic equation for the reaction that took place.
b) Given that the mass of copper deposited was 5.83g, calculate the molar enthalpy change in kJmol-1.(specific heat capacity of solution=4.2Jg-1K-1,density of solution=1.0gcm-3,Cu=63.5)

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