Ni(OH)2의 몰용해도. 20℃ 0.14 g Ni(OH)2(s) 1 L water

Ni(OH)2의 몰용해도. 20℃ 0.14 g Ni(OH)2(s) 1 L water

 

 

Approximately 0.14 g nickel(II) hydroxide, Ni(OH)2(s),

dissolves per liter of water at 20℃.

Calculate Ksp for Ni(OH)2(s) at this temperature.

 

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▶ 참고: 용해도곱상수와 몰용해도. Ksp와 몰용해도

[ https://ywpop.tistory.com/8434 ]

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Ni(OH)2의 몰질량 = 92.71 g/mol 이므로,

(0.14 g/L) (1 mol / 92.71 g) = 0.0015 mol/L

---> Ni(OH)2의 몰용해도, s

 

 

 

Ni(OH)2(s) ⇌ Ni^2+(aq) + 2OH^-(aq)

 

Ksp = (s) (2s)^2

= (0.0015) (2×0.0015)^2

= 1.4×10^(-8)

 

 

 

답: 1.4×10^(-8)

 

 

 

 

[키워드] Ni(OH)2의 Ksp 기준문서, Ni(OH)2의 몰용해도 기준문서