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134 solutions

The Reaction Quotient

Q. Consider the reaction Mg(s) + Fe^2+(aq) → Mg^2+(aq) + Fe(s) at 63 °C, where [Fe62+] = 2.90 M and [Mg62+] = 0.110 M. What is the value for the reaction quotient, Q, for the cell? Express your answer numerically.

Solved • Mar 4, 2020

The Reaction Quotient

Q. A precipitate of lead(II) chloride forms when 200.0 mg of NaCl is dissolved in 0.250 L of 0.12M lead(II) nitrate. True or False? Ksp of PbCl2 is 1.7x10^-5

Solved • Mar 29, 2020

The Reaction Quotient

Q. Calculate the value Q What is the value of Q when the solution contains 2.50 x 10^-3 M Mg^2+ and 2.00x 10^-3 M CO3^2-? Express your answer numerically.

Solved • Mar 24, 2020

The Reaction Quotient

Q. A solution is 0.0100 M in each of the metal ions in the following table: HCl is added to the solution so that the H3O^+ concentration is 0.300 M. H2S gas is bubbled through the solution to attain a H2S concentration of 0.100 M. Predict which of the sulfides precipitate under the given conditions. Drag each item to the appropriate bin. NiS, CuS, FeS, PbS The solution remaining from Part A, which contains 0.100 M Ni^2+ and Fe^2+ ions, is still saturated with H2S gas, producing a concentration of 0.100 M. A buffer is added to this solution to produce a pH of 2.01. Which of the following describes correctly the effect of the addition of the buffer? a) Only NiS precipitates. b) Only FeS precipitates. c) Both NiS and FeS precipitate. d) Neither NiS nor FeS precipitate.

Solved • Feb 26, 2020

The Reaction Quotient

Q. Calcium sulfate, CaSO4, has a Ksp value of 7.10 x 10^-5. What happens when calcium and sulfate solutions are mixed to give 2.00 x 10^-3 M Ca^2+ and 3.00 x 10^-2 MSO4^2-? a) A precipitate forms because Q > Ksp. b) A precipitate forms because Q < Ksp. c) No precipitate forms because Q >Ksp. d) No precipitate forms because Q < Ksp.

Solved • Feb 26, 2020

The Reaction Quotient

Q. What is the value of Q when the solution contains 2.00 x 10^-3 M Ca^2+ and 3.00 x 10^-2 MSO4^2-? Express your answer numerically.

Solved • Feb 26, 2020

The Reaction Quotient

Q. A solution is 0.0100 M in each of the metal ions in the following table: HCl is added to the solution so that he H3O^+ concentration is 0.300 M • H2S gas is bubbled through the solution to attain a H2S concentration of 0.100 M. Predict which of the sulfides precipitate under the given conditions. Drag each item to the appropriate bin. NiS, CuS, FeS, PbS

Solved • Feb 26, 2020