Experiment-A7: Enthalpy of Dissolution
Pre-laboratory Exercises
1. Define the molar enthalpy of dissolution of a compound.
Name:
2. Calculate the molar mass of each of the following compounds and the mole quantity in a 10.0-g sample
of each compound.
(a) NaNO$_3$
(b) NH$_4$NO$_3$
(c) NH$_4$Cl
(d) MgSO$_4$
(e) CaCl$_2$
3. 50.0 g of cold water at an initial temperature of 22.0°C is placed in a Styrofoam calorimeter. Then,
50.0 g of warm water with an initially at 40.0°C is added to the cold water. After both water samples
reach thermal equilibrium, the final temperature of the mixture is 30.6°C. Calculate: (a) heat absorbed
by cold water; heat lost by warm water, and (c) heat capacity of calorimeter.
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