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11Alexandr11 [23.1K]
4 years ago
9

Which statement is correct for pure water? A) Pure water contains equal amounts of hydroxide, [OH-], and hydronium, [H3O+], ions

. B) Pure water contains larger amounts of hydroxide, [OH-], ions than hydronium, [H3O+], ions. C) Pure water contains larger amounts of hydronium, [H3O+], ions than hydroxide, [OH-], ions. D) Pure water is an electrolyte.
Chemistry
2 answers:
love history [14]4 years ago
7 0
A)pure water contains equal amount of hydroxide and hydronium ion
kakasveta [241]4 years ago
5 0

Answer:

The correct answer is option A.

Explanation:

A pure water has pH value of 7 which neutral in nature. Pure water equal amount of hydronium ions and hydroxide ions.

H_2O+H_2O\rightleftharpoons H_3O^++OH^-

Ionic product of water = K_w=1\times 10^{-14}

[H_3O^+]=[OH^-]

K_w=1\times 10^{-14}=[H_3O^+]\times [OH^-]

[H_3O^+]=10^{-7}

The pH value of pure water :

pH=-\log[H_3O^+]=-\log[10^{-7}] = 7

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