How do you calculate pH of water from KW?
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To find the pH you need first to find the hydrogen ion concentration (or hydroxonium ion concentration - it's the same thing). Then you convert it to pH. But in pure water, the hydrogen ion (hydroxonium ion) concentration must be equal to the hydroxide ion concentration.
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T (°C) Kw (mol2 dm-6) pH
100 51.3 x 10-14 6.14
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