A soluble salt, MX2, is added to water in a beaker. The equation for the dissolving of the salt is:
MX2 (s) → M2+ (aq) + 2X-(aq); ΔH > 0
1. Immediately after the salt dissolves, is the solution colder or warmer?
2. Indicate the direction of the heat flow, in or out of the beaker, while the salt dissolves.
3. After the salt dissolves and the water returns to room temperature, determine the value of q for the system?