1 .		Which one of the following should be the least soluble in tetrachloride, CCl4?
2 .		If 200. g of a solvent is available, how many grams of a solute should be weighed out to make up a 10.0 percent solution (by mass)?
3 .		What would be the osmotic pressure in atm produced at 25°C by a 0.0100 M NaCl solution? (Assume a van't Hoff factor of 1.87.)
4 .		In the reaction A --> products, the initial concentration of A is 0.86 M, and 40. sec later it is 0.68 M. What is the initial rate of this reaction in M·min-1?
5 .		Initial rate data were obtained for the following reaction: A(g) + 2B(g) --> C(g) + D(g) initial initial initial Experiment [A], mol/L [B], mol/L rate 1 0.15 0.10 4.5 x 10-1 2 0.30 0.10 1.8 3 0.15 0.20 9.0 x 10-1 What is the rate law for the reaction?
6 .		Refer to the equation below, where two mechanisms are proposed for the reaction of nitrogen dioxide with carbon monoxide: NO2(g) + CO(g) --> CO2(g) + NO(g) Mechanism I: NO2(g) + CO(g) --> CO2(g) + NO(g) (one step) Mechanism II: NO2(g) + NO2(g) --> NO3(g) + NO(g) (slow) NO3(g) + CO(g) --> CO2(g) + NO2(g) (fast) What is the predicted rate law for Mechanism I?
7 .		What is a characteristic of the molecules that form liquid crystals?
8 .		For the vapor-phase reaction 2AZ A2 + Z2, Keq = 16 at 523 K. If 0.030 mol AZ is introduced into a 1.00-L vessel at 523 K, then at equilibrium [Z2] is
9 .		The value of Keq for the reaction CaCO3(s) CaO(s) + CO2(g) is 0.880 at 600°C. If a 15.0-g sample of CaCO3 is put into a 10.0-L container and heated to 600°C, what percent of the CaCO3 reacts?
10 .		Consider the following equilibrium between oxides of nitrogen: 3NO(g) NO2(g) + N2O(g) Using Hf(NO) = 93.37 kJ/mol, Hf(NO2) = 33.84 kJ/mol, and Hf(N2O) = 81.6 kJ/mol, calculate H for this reaction. (i) Will the equilibrium constant for the reaction increase or decrease with increasing temperature? (ii) At constant temperature, would a change in the volume of the container affect the fraction of products in the equilibrium mixture?
Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.