SATHEE: Equilibrium Question 318

Equilibrium Question 318

Question: The pH of pure water or neutral solution at $50^{\circ} C$ is -. $(p K_{w} = 13.26$

$= 13.26$ at $50^{\circ} C)$ [Pb. PMT 2002; DPMT 2002]

Options:

A) 7.0

B) 7.13

C) 6.0

D) 6.63

Show Answer

Answer:

Correct Answer: D

Solution:

$[H^{+}], [O H^{-}], = 10^{- 13.26}$

$∴$ $[H^{+}], =, [O H^{-}],$

$∴$ ${[H^{+}]}^{2} = 10^{- 13.26}$

$[H^{+}] = 10^{\frac{- 13.26}{2}}$ pH = 6.63.

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Equilibrium Question 318

Question: The pH of pure water or neutral solution at 50∘C is -. (pKw=13.26

Options:

Answer:

Solution:

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Question: The pH of pure water or neutral solution at $50^{\circ} C$ is -. $(p K_{w} = 13.26$