Why do calorimetry experiments typically result in a smaller change in temperature than is expected from theoretical values?
50.0 cm3 of a 0.500 mol dm-3 solution of iron(II) sulfate is placed in a polystyrene cup and its temperature is measured. 0.800 g of powdered magnesium is added, and the temperature is observed to rise by 20.6 °C.
a. Give the chemical equation for the reaction occurring.
b. Calculate the standard enthalpy change of the reaction.
c. Identify three assumptions you have made in calculating the standard enthalpy change of the reaction.