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Question Completion Status: QUESTIONS Will the solubility of Co(NO3)3(s), CoBr3(s), CoCl3(s) increase, decrease, or remain th
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Answer #1

Q5. Correct option is : (1-) Solubility of: Co(NO3)3(s) remains the same, CoCl3 (s) decreases, CoBr3(s) remains the same

Q6. Correct option is : (1-) Ksp = S.(S + 0.15) ; S = (Ksp/0.15) ; S = 7.33 x 10-12 M

Explanation

When aqueous HCl is added to solution of CoCl3, the solubility of CoCl3 decreases due to common ion chloride Cl-

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