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  4. A solution is 10 %NaOH by mass has density 1.2g/ml . What volume of this solution should contain 6mol of NaOH ?

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Q. A solution is $10\%NaOH$ by mass has density $1.2g/ml$ . What volume of this solution should contain $6mol$ of $NaOH$ ?

NTA AbhyasNTA Abhyas 2020

Solution:

Mass of $NaOH=6\times 40=200g$
Let mass of solution $wg$
$NaOH=\frac{w \times 10}{100}=240$
volume of solution required $=\frac{m}{d}=\frac{2400}{1 . 2}ml$
$=2000ml$
$=2L$