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A solution with [ OH] of 5 x 10-3 has a pH of
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5 votes
A solution with [ OH] of 5 x 10-3 has a pH of

User Hajamie
by
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1 Answer

5 votes

Answer:

11·699

Step-by-step explanation:

Given the concentration of hydroxide ion in the solution is 5 ×
10^(-3) M

Assuming the temperature at which it is asked to find the pH of the solution be 298 K

At 298 K the dissociation constant of water is
10^(-14)

∴ pH + pOH = 14 at 298 K

pOH of the solution = -log( concentration of hydroxide ion )

∴ pOH of the given solution = - log(5 ×
10^(-3) = -0·699 + 3 = 2·301

pH of the given solution = 14 - 2·301 = 11·699

∴ pH of the solution = 11·699

User Mohammad Muddasir
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