Calculate poh of 10^-2 m monobasic acid if value of kw at 90c is 10^-12
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Answered by
56
For Mono-basic acid, the Hydrogen Ion concentration will be equal to its concentration.
∴ H⁺ concentration = 10⁻² M.
Using the Formula,
pH = -log[H⁺]
pH = - log[10⁻²]
pH = 2log10
pH = 2
Now, The Ionic Product of the water = 10⁻¹²
∴ Sum of the Hydronium ions concentration and Hydroxy ions concentration = 12
∴ pOH + pH = 12
⇒ pOH = 12 - 2
⇒ pOH = 10
Hope it helps.
Answered by
10
The pOH of the mono basic acid is 10.
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