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pH the Power of H

pH of 0.005 M...

Question

pH of 0.005M Ca(OH)₂ solution is

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Solution

If you look at the formula of the compound there are two OH- for every Ca2+. So 0.005 M Ca(OH)2 gives a solution 0.010 M in OH- .

Now all you need to do is to take the negative log of this number and that would be your pOH.

-log(0.01) = 2 = pOH

pH + pOH = 14

According to this statement, your pH would be 12.

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