d) Calculate the mass, in mg, of cobalt (II) arsenate that is present in 50.0 mL of a saturated solution at 25°C. (e) Which salt, cobalt (II) arsenate or zinc arsenate has the greater value of [AsO43–] at equilibrium at 25°C? Justify your answer. *Note – you do not need to use a calculation. (The value of Ksp for zinc arsenate at
Consider the sparingly soluble salt cobalt (II) arsenate.
(a) Write a balanced chemical equation for the dissolution of cobalt (II) arsenate in distilled water.
(b) Write the expression for the solubility-product constant, Ksp, for cobalt (II) arsenate.
(c) Determine the equilibrium concentrations, in mol L–1 , of each ion in the solution at 25°C. Be sure to show your work.
(d) Calculate the mass, in mg, of cobalt (II) arsenate that is present in 50.0 mL of a saturated solution at 25°C.
(e) Which salt, cobalt (II) arsenate or zinc arsenate has the greater value of [AsO43–] at equilibrium at 25°C? Justify your answer. *Note – you do not need to use a calculation. (The value of Ksp for zinc arsenate at this temperature is 2.8 × 10–28)
*Answer already found for] parts a-c so just need the answers for part d and e
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 1 images
