In an experiment to determine the molar heat of reaction when magnesium displaces copper. 0.15g of magnesium powder was added to 25 cm³ of 0.2m copper (ll) chloride solution was 25⁰C while that of the mixture was 43⁰C.

(i) Other than increase in temperature, state and explain the observation which were made during the reaction ( 3 mks)

(ii) Calculate the heat change during the reaction (Specific heat capacity of the solution = 4.J/g/k and the density of the solution = 1g/cm³ ( 2 mks)

(iii) Determine the molar heat of displacement of copper by magnesium (mg = 24.0)

(iv) Write the ionic equation for the reaction ( 1 mk)

(v) Sketch an energy level diagram for the reaction

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i Other than increase in temperature the observation which were made duri... View the full answer