KBr is relatively soluble in water, yet its enthalpy of solution is +19.8 kJ/mol. Which of...

KBr is relatively soluble in water, yet its enthalpy of solution is +19.8 kJ/mol. Which of the following statements provides the best explanation for this behavior?

a. K salts are always soluble in water

b. The entropy of mixing must be unfavorable

c. The enthalpy of mixing must be small compared to the enthalpies for breaking up water-water interactions and K-Br ionic interactions.

d. KBr has a high molar mass compared to NaCl.

2. If the partial pressure of a gas over the solution is tripled, what happens to the concentration of the gas in solution, after the equilibrium is restored?

3. Why do two ideal gases thoroughly mix when combined? What drives the mixing?

Expert Solution

queen_honey_blossom answered 2 years ago

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