MCQ
$0.0833\,mol$ of carbohydrate of empirical formula $C{H_2}O$ contain $1\,g$ of hydrogen. The molecular formula of the carbohydrate is
- A${C_5}{H_{10}}{O_5}$
- B${C_3}{H_4}{O_3}$
- C${C_{12}}{H_{22}}{O_{11}}$
- ✓${C_6}{H_{12}}{O_6}$
✓
Answer
Correct option: D.
${C_6}{H_{12}}{O_6}$
d
(d) $0.0833$ mole carbohydrate has hydrogen = $1\,g$
(d) $0.0833$ mole carbohydrate has hydrogen = $1\,g$
$\therefore $ $1$ mole carbohydrate has hydrogen $ = \frac{1}{{0.0833}} = 12\,g$
Empirical Formula $(C{H_2}O)$ has hydrogen $ = 2\,g$
Hence $n = \frac{{12}}{2} = 6$
Hence molecular formula of carbohydrate $ = {(C{H_2}O)_6} = {C_6}{H_{12}}{O_6}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Which statement is correct
Incorrect statements among the following is/are
In context of $Be$, which one of the following statement is incorrect?
→Compound in which all $C—N$ bond lengths are not same
→Name of the compound given below is
The natural petroleum contains
White lead is
Which of the following equilibrium is not affected by pressure ?
In an atom, the maximum number of electrons in an orbit / principal energy level n is
In which of the following processes entropy increases?
→$A$. A liquid evaporates to vapour.
$B$. Temperature of a crystalline solid lowered from $130 \mathrm{~K}$ to $0 \mathrm{~K}$.
$C$. $2 \mathrm{NaHCO}_{3(\mathrm{~s})} \rightarrow \mathrm{Na}_2 \mathrm{CO}_{3(\mathrm{~s})}+\mathrm{CO}_{2(\mathrm{~g})}+\mathrm{H}_2 \mathrm{O}_{(\mathrm{g})}$
$D$. $\mathrm{Cl}_{2(g)} \rightarrow 2 \mathrm{Cl}_{(g)}$
Choose the correct answer from the options given below: