1. For KNO3 the heat of solution is 23.8 kJ/mol and the lattice energy is -685.0...

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Chemistry

1. For KNO3 the heat of solution is 23.8 kJ/mol andthe lattice energy is -685.0 kJ/mol. Calculate the heat ofhydration.

2. 60.3 g of zinc sulfate [ZnSO4], is added to 160. gof water. Will the salt dissolve completely and, if so, will thesolution be saturated or unsaturated? The solubility ofZnSO4 is 3.57 m.

3. What volume of water, in mL, is needed to dissolve 2.2 mg ofhydrogen gas when the partial pressure of hydrogen above the wateris 2.2 atm at 25 °C? The Henry's constant for hydrogen gas in waterat 25 °C is 7.8×10-4 M/atm.

PLEASE ANSWER ALL 3 QUESTIONS.

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