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  • waht is the ph of solution? plz solve this...

waht is the ph of solution? plz solve this question as soon as possible.

waht is the ph of solution?
plz solve this question as soon as possible.

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Grade:12th pass

1 Answers

Arun
25763 Points
2 years ago
pH=pKa....+ …......log(salt/acid)As we are mixing equal volumes of the two solution, so the final concentration of NaOH as well as of acid would be ½ of the initial concentraton.Hence, pH=4.74+....log(0.1/0.1)=pKaHere we have assumed that the strong base dissociates completely(in general it is true), but the dissociation of weak acid is quite low.
 
pH = 1/2[pKw + pKa + log C]
= 1/2[14 +4.74 + log 0.1]
= 8.87

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