Problem: The ionization constant for water (Kw) is 2.9 × 10−14 at 40 °C. Calculate [H3O+], [OH−], pH, and pOH for pure water at 40 °C.

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In neutral solution, [H3O+] = [OH-] , pH = pOH


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The ionization constant for water (Kw) is 2.9 × 10−14 at 40 °C. Calculate [H3O+], [OH], pH, and pOH for pure water at 40 °C.