Concentrated nitric acid is labelled as 75 % | vedclass

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(C) Given that the concentration of $HNO_3$ is $75 \% \ w/w$. This means $100 \ g$ of the solution contains $75 \ g$ of $HNO_3$. The density of the so

Vedclass · Accepted Answer

$32$

Vedclass · Answer

(C) Given that the concentration of $HNO_3$ is $75 \% \ w/w$. This means $100 \ g$ of the solution contains $75 \ g$ of $HNO_3$. The density of the solution is $d = 1.25 \ g/mL$. The volume of $100 \ g$ of the solution is $V = \frac{	ext{mass}}{	ext{density}} = \frac{100 \ g}{1.25 \ g/mL} = 80 \ mL$. Thus,$75 \ g$ of $HNO_3$ is present in $80 \ mL$ of the solution. Therefore,the volume of the solution containing $30 \ g$ of $HNO_3$ is $\frac{80 \ mL}{75 \ g} 	imes 30 \ g = 32 \ mL$.

Concentrated nitric acid is labelled as $75 \%$ by mass. The volume in $mL$ of the solution which contains $30 \ g$ of nitric acid is $.............$ Given : Density of nitric acid solution is $1.25 \ g / mL$

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