pH of NaOH in water porblem! HELP PLEASE | Ask / Discuss

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Romanenko 26 months ago
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Calculate the pH of a 1.2 multiplied by 10-7 M solution of NaOH in water.

mauricio acelas 26 months ago
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This is an easy one

NaOH dissolves completely in water NaOH ---> Na+ + OH- so 1.2x10^-7 M is the concentration of hydroxile ions. Now you can calculate the pOH pOH = -log[OH] = -log[1.2x10^-7M] = 6.92 so the pH u r looking for corresponds to 14-pOH pH = 14 - 6.92 = 7.08 slightly basic =P