Practice Test - MCQs test series for Term 2 Exams

100 mL of 0.2 N HCl is added to 100 mL of 0.18 N NaOH and the whole volume is made 2 liters.The pH of resulting solution is

Asked by dev.sultanpur123 | 3rd May, 2015, 10:30: PM

Expert Answer:

$begin mathsize 11px style Normality space equals space fraction numerator straight N subscript 1 straight V subscript 1 space plus space straight N subscript 2 straight V subscript 2 over denominator Final space Volume end fraction space equals space fraction numerator 100 space cross times space 0.2 space plus space 100 space cross times space 0.18 over denominator 2000 end fraction space equals 38 over 2000 space equals space 0.019 Normality space equals space Molarity space cross times space Basicity space equals space 0.019 space straight M pH space equals space minus log space left square bracket straight H to the power of plus right square bracket space equals space minus space log space left square bracket 0.019 right square bracket space equals space 1.72 space end style$

Answered by Arvind Diwale | 4th May, 2015, 10:01: AM

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