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If $500 \mathrm{~mL}$ of a $5 \mathrm{~M}$ solution is diluted to $1500 \mathrm{~mL}$, what will be the molarity of the solution obtained?
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The correct answer is:
$1.66 \mathrm{~M}$
$1.66 \mathrm{~M}$
For dilution, a general formula is
$M_1 V_1 \quad=\quad M_2 V_2$
(Before dilution) (After dilution)
$500 \times 5 M=1500 \times M_2$
$M_2=\frac{5}{3}=1.66 \mathrm{~M}$
$M_1 V_1 \quad=\quad M_2 V_2$
(Before dilution) (After dilution)
$500 \times 5 M=1500 \times M_2$
$M_2=\frac{5}{3}=1.66 \mathrm{~M}$
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