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CBSE Class 11-science Answered

Chemistry doubt
Asked by achamerahul2 | 14 Apr, 2020, 02:42: PM
Expert Answer
Equilibrium concentration is given, To calculate pH, read the first statement - 'First dissociation to be 100% and second dissociation to be 50%', Which clearly means dissociation is reduced by half so degree of dissociation would be=0.5
left square bracket O H to the power of minus right square bracket equals C alpha left square bracket O H to the power of minus right square bracket equals 8 cross times 10 to the power of negative 3 space end exponent cross times 0.5 space space space space space space space space space space equals 4 cross times 10 to the power of negative 3 end exponent space M p O H equals negative log left parenthesis 4 cross times 10 to the power of negative 3 end exponent right parenthesis p O H equals 2.4 p H equals 14 minus 2.4 p H equals 11.6
Answered by Ravi | 15 Apr, 2020, 09:06: PM

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