Question

$50 \,mL$ of an aqueous solution of glucose contains $6.02 \times 10^{22}$ molecules. The concentration of solution is

• A. $0.1\,M$
• B. $1.0 \,M$
• C. $0.2\, M$
• D. $2.0 \,M$

Answer 1

Answer: (D)

Mole of glucose $= \frac{6.02\,\times\,10^{22}}{6.02\,\times\,10^{23} } = 0.1$
$\therefore M_{glucose} = \frac{0.1\,\times\,1000}{50} = 2$