1. Correct. 
2. You have 0.86 mol of CsCl per 1000 mL of solution. The grams of CsCl is (0.86 mol)(168.358 g/mol) = 144.788 g. The grams of solution (1000 mL) is (1000 mL)(1.091 g/mL) = 1091 g. The percent by weight CsCl will be the grams of CsCl divided by the total mass of the solution, X 100.
3. For this problem, just plug into the formula, ΔSsurr = –ΔHsys / T.
4. When the total pressure of all gaseous substances in the reaction is increased, done by compressing the reaction vessel volume, for example, then the reaction responds by going in the direction which "relieves" the pressure, which is toward the side that has the fewest gas molecules. The number of gas molecules on each side of the reaction is given by the coefficients in front of the gaseous substances. In this reaction, you have 1 mole of gaseous reactant (1 H2O) and two moles of gaseous products (1 CO and 1 H2). Therefore, the reactant side has the fewest gaseous molecules.
5. If there is the same number of gaseous substances on each side, then the reaction does not go in the forward or reverse direction when the total pressure is increased.
Steve
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