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The formula weight of an acid is 82.0.$100cm^3$ of a solution of this acid containing 39.0g of the acid per litre were completely neutralized by $95.0cm^3$ of aqueous NaOH containing 40.0g of NaOH per litre.What is the basicity of the acid?


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$n$ is basicity of acid
Normality of acid =$\large\frac{39}{82/n\times 1}$
Normality of NaOH =$\large\frac{40}{40}\times \frac{1000}{1000}$$=1$
$\therefore \large\frac{39n}{82}$$\times 100=1\times 95$
Hence (d) is the correct answer.
answered Oct 31, 2013 by sreemathi.v

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