Question

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

• A. $2400ml$
• B. $2000L$
• C. $2L$
• D. $500mL$

Answer 1

Answer: (C)

Mass of $NaOH=6\times 40=200g$
Let mass of solution $wg$
$NaOH=\frac{w\times 10}{100}=240$
volume of solution required $=\frac{m}{d}=\frac{2400}{1.2}ml$
$=2000ml$
$=2L$