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Q.

Equal volumes of 0.5M NaOH and 0.3M KOH are mixed. Then the pH and pOH of resulting solution are respectively.

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a

13.6, 0.4

b

0.4, 13.6

c

0.7, 13.3

d

13.3, 0.7

answer is A.

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Detailed Solution

OH-final =0.5×V+0.3×V2V=12(0.8) OH-final =0.4=4×10-1

POH = 1 - 2 x0.30 = 0.4

PH = 13.6

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Equal volumes of 0.5M NaOH and 0.3M KOH are mixed. Then the pH and pOH of resulting solution are respectively.