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Asked by rgunasekhar2222 | 26 Jun, 2020, 08:46: AM
answered-by-expert Expert Answer
RNH2 is a weak base. 
pH equals 14 minus 1 half left parenthesis pK subscript straight b minus logC right parenthesis
pK subscript straight b space end subscript space equals negative log left parenthesis 2 cross times 10 to the power of negative 6 end exponent right parenthesis equals 6 minus log 2
pH equals 14 minus 1 half open parentheses pK subscript straight b minus logC close parentheses
pH equals 14 minus 1 half open parentheses 6 minus log 2 minus log 10 to the power of negative 2 end exponent close parentheses
pH equals 14 minus 3 plus fraction numerator log 2 over denominator 2 end fraction plus 1 half left parenthesis negative 2 right parenthesis
pH equals 10 plus fraction numerator log 2 over denominator 2 end fraction
pH equals 10.15
straight p to the power of OH space equals 14 minus pH equals 14 minus 10.15 equals 3.85
left square bracket OH to the power of minus right square bracket equals 1.41 cross times 10 to the power of negative 4 end exponent
Answered by Ravi | 26 Jun, 2020, 09:51: AM
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