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The H3O^+ ion concentration of a solution of pH 6.58 is:

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The H3O+ ion concentration of a solution of pH 6.58 is:

(a) antilog (- 6.58)

(b) antilog (- 5.58)

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Correct option is (a) antilog (- 6.58)

pH = – log [H3O+];

log [H3O+] = -pH = – 6.58

[H3O+] = antilog (-6.58)

= 2.63 x 10-7 g ion/lit

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