For pure water at 6 0 ∘ C , where K w = 1.0 × 1 0 − 13 , which of the following are correct?

Chemistry - Ionic Equilibrium Question with Solution | TestHub

ChemistryIonic EquilibriumpH of Strong and Weak Acids and BasesMedium2 minQB

ChemistryMediummultiple choice

For pure water at $6 0^{\circ} C$ , where $K_{w} = 1.0 \times 1 0^{- 13}$ , which of the following are correct?

Answer:

A, D

Solution:

Pure water is always neutral: $[H^{+}] = [OH^{-}] = 1 0^{- 13} = 3.16 \times 1 0^{- 7} M$ , so (A) is correct.

pH = 6.5, not 7.0, so (B) is wrong and the water is still neutral, so (C) is wrong.

$p K_{w} = 13 < 14$ : (D) is correct.

Answer: (A), (D).

Stream:JEESubject:ChemistryTopic:Ionic EquilibriumSubtopic:pH of Strong and Weak Acids and Bases

⏱ 2mℹ️ Source: QB

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