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The hydroxide ion concentration in an aqueous solution at 25°C is 7.2x10-2 M. The hydronium ion concentration is M. The pH of

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[CH] = 7.2 X162 M Гон) [н]: охо и [H+) - Hydronium ion - 1.0x16 um 10 7. 2x102 = [1, 39 x153/M pH = -109 (H+) = 112.86) po

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