Question

If 500 mL of a 5 M solution is diluted to 1500 mL, what will be the molarity of the solution obtained?

• A. 1.5 M
• B. 1.66 M
• C. 0.017 M
• D. 1.59 M

Answer 1

The correct option is B 1.66 M

Using $M_1{V}_1=M_2{V}_2$

where $M_1=5M$,

$V_1=500mL$,

$M_2=?$,

$V_2=1500mL$

$\Rightarrow 5\times 500=1500M_2$

$M_2=1.66M$

Hence, option $B$ is correct.