Calculate the percent (%) of water molecules in pure water that are ionized. (Hint: which species in the auto-ionization reaction. are ions? What is their concentration?) A B D 100 % (C) 1.8 x 10-⁹% с E 0.1 % 1.8 x 10-7 % 1.8 x 10-14 %

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Chapter17: Spontaneity, Entropy, And Free Energy
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The concentration of pure water is 55.5M.

Calculate the percent (%) of water molecules in pure
water that are ionized.
(Hint: which species in the auto-ionization reaction
are ions? What is their concentration?)
A 100 %
B
C
0.1%
1.8 x 10-⁹ %
D) 1.8 x 10-7%
E) 1.8 x 10-14 %
Transcribed Image Text:Calculate the percent (%) of water molecules in pure water that are ionized. (Hint: which species in the auto-ionization reaction are ions? What is their concentration?) A 100 % B C 0.1% 1.8 x 10-⁹ % D) 1.8 x 10-7% E) 1.8 x 10-14 %
Recall the auto-ionization of water reaction:
K-14
H
:0—
8+
H
H
:00
H
In pure water at 25°C the concentration of
H3O+ equals the concentration of "OH which is 10-
7 M
[H3O+] = [OH] = 1 x 10-7 M
Transcribed Image Text:Recall the auto-ionization of water reaction: K-14 H :0— 8+ H H :00 H In pure water at 25°C the concentration of H3O+ equals the concentration of "OH which is 10- 7 M [H3O+] = [OH] = 1 x 10-7 M
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