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Chapter-15-problems

# Chapter-15-problems - 1 A sample of NH4HS(s is placed in a...

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1 A sample of NH 4 HS(s) is placed in a 2.58L flask containing 0.100 mol of NH 3 (g). NH 4 HS(s) NH 3 (g) + H 2 S(g) K P = 0.108 at 25°C What will be the total gas pressure when equilibrium is established at 25°C?

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2 A solution is prepared with [V 3+ ] = [Cr 2+ ] = 0.0100 M and [V 2+ ] = [Cr 3+ ] = 0.150 M. The following equilibrium is established: V 3+ (aq) + Cr 2+ (aq) V 2+ (aq) + Cr 3+ (aq) K C = 7.2 x 10 2 What are the ion concentrations when equilibrium is established?
3 The N 2 O 4 , NO 2 equilibrium mixture in the flask on the left in the figure is allowed to expand into the evacuated flask on the right. N 2 O 4 (g) 2 NO 2 (g) K C = 4.61 x 10 -3 at 25°C What is the composition of the gaseous mixture when equilibrium is re- established in the system consisting of the two flasks?

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4 Cadmium metal is added to 0.350 L of an aqueous solution in which