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Chemistry - Ionic Equilibrium Question with Solution | TestHub

ChemistryIonic EquilibriumSolubility ProductMedium2 minPYQ_2021
ChemistryMediumstatement

The molar solubility of Zn(OH)2 in 0.1MNaOH solution is x×10-18M. The value of x is _____ . (Nearest integer)

Given : The solubility product of  Zn(OH)2 is 2×10-20

Answer:
2
Solution:

Zn(OH)2( s)⇌Zn+2(aq)+2OH-(aq)                                     S            (0.1+2s)≈0.1

Ksp=S(0.1)2

2×10-20=s×10-2⇒s=2×10-18

=x×10-18

x=2

Stream:JEESubject:ChemistryTopic:Ionic EquilibriumSubtopic:Solubility Product
⏱ 2mℹ️ Source: PYQ_2021

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