Answer to Question #176025 in General Chemistry for Jaycie Banks

Question #176025
  1. You add 34 g of cobalt (ll) hydroxide to a hot tub (V=2500 L). The Ksp of cobalt (ll) hydroxide is 1.3*10^-15. If the hot tub is filled with water, what is the concentration of the cobalt (ll) in the hot tub when it reaches equilibrium?
  2. If the hot tub is filled with a solution containing 5.2*10^-5 NaOH, what is the concentration of the cobalt (ll) in the hot tub when it reaches equilibrium?
1
Expert's answer
2021-03-31T08:10:52-0400

Reaction:



"\\text{Co(OH)}_2=\\text{Co}^{2+}+2\\text{OH}^-,"

the solubility constant is



"K_{sp}=[\\text{Co}^{2+}]^1[\\text{OH}^-]^2."

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