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Equal volumes of M NaOH and 0.3 M KOH a...

Equal volumes of M NaOH and 0.3 M KOH are mixed in an experiment. Find the POH and pH of the resulting solution.

Text Solution

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The concentration of hydroxyl ions in the mixture
`N=(V_1N_1 +V_2 N_2)/( V_1 +V_2) = (V xx 0.6 xx V xx 0.2 ) / (V +V ) = 0.4 mol L^(-1)`
pOH of the mixture = -log(0.4) = 1-log 4 = 1-0.6=0.4.
pH of the mixture = 14 -0.4 = 13.6.
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