Question

Statement I : Molecular mass of cane sugar $\left( C _{12} H _{22} O _{11}\right)$ is $182\, amu$.
Statement II : 1 mole of cane sugar contains $6.022 \times 10^{23}$ molecules of cane sugar.

• A. Both statement I and II are correct.
• B. Both statement I and II are incorrect.
• C. Statement I is correct but statement II is incorrect.
• D. Statement II is correct but statement I is incorrect.

Answer 1

Answer: (D)

Molecular mass of cane sugar $\left( C _{12} H _{22} O _{11}\right)$
$=12 \times 12+22 \times 1+11 \times 16$
$=342 \,amu$
$1$ mole of cane sugar $\left( C _{12} H _{22} O _{11}\right)=342 \, g$
(Molecular mass of cane sugar $=342 \,g$ )
$342 \,g$ of cane sugar contain $=6.022 \times 10^{23}$ molecules