1.)
What is the molar solubility of a hypothetical compound AB in pure water given a Ksp = 6.4 x 10-2?
AB(s) ⇌ A+(aq) + B-(aq)
2.)
What is the pH of a grapefruit that contains 0.007 M citric acid solution (C6H8O7)?
C6H8O7(aq) + H2O(ℓ) ⇌ C6H7O7−(aq) + H3O+(aq)
Ka = 7.5 x 10-4
0.050 M of H2 and 0.050 M of Br2 are placed in an evacuated 5.0 L flask and heated to 700 K. What is the concentration of HBr in the flask when equilibrium has been established? The equation for the reaction is as follows:
H2(g) + Br2(g) ⇌ 2HBr(g) K = 64 @ 700 K
The water-gas shift reaction is important in several chemical processes, such as the production of H2 for fuel cells. This reaction can be written as follows:
H2(g) + CO2(g) ⇌ H2O(g) + CO(g)
with K = 0.106 at 700 K. If a mixture of gases that initially contains 0.632 M CO2 and 0.570 M H2 is allowed to equilibrate at 700 K, what is the final concentrations of CO?
5.)
What is the molar solubility of a hypothetical compound AB in a solution containing 0.05 M B- given a Ksp = 3.6 x 10-2?
AB(s) ⇌ A+(aq) + B-(aq)
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