Question

Quine

請問這題與溶解平衡常數有關的題目要怎麼判斷 為什麼題目給的是Cu(OH)2的Ksp呀😦謝謝

BA
[H²] =10³ M
(B) 17. We add enough CuCl2 to a pH = 5.0 solution to give [Cu²+]=3.0x10-³ M.
If Ksp for Cu(OH)2= 1.6x10-19, determine which of the following is true.
(A) the system is at equilibrium
(C) a precipitate forms
(B) a precipitate does not form
(D) none of the above
457.6xio, s= 0.342x166

Answer 1

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Raymond

［h+]=10^-5 [oh-]=10^-9
cu(oh)2->cu2+ + 2oh- ,ksp = 1.6*10^-19
當前[cu2+]*[oh-]^2=3*10^-21 < ksp(平衡向右)
因此不會產生沈澱

Quine

謝謝你🙏～