Question

If 100 mL of a 5M solution is diluted to 1000 mL, what will be the molarity of the solution obtained?

Answer 1

Using $M_1V_1=M_2V_2$

$M_1=5M$

$V_1=100mL$

$M_2=?$

$V_2=1000mL$

$\therefore 5\times 100=1000M_2$

$M_2=2M$