Single Choice

An organic compound contains $$C = 40$$%, $$O= 53.5$$%, and $$H = 6.5$$%. The empirical formula of the compound is:

A$$CH_2O$$
Correct Answer
B$$C_2H_4O$$
C$$C_6H_{12}O_6$$
D$$C_2H_4O_2$$

Solution

As per given, the ratio of number of moles is,
$$\displaystyle \begin{matrix}C&:&H&:&O \\ \dfrac{40}{12}&:&\dfrac{6.5}{1}&:&\dfrac{53.5}{16}\\1&:&2&:&1\end{matrix}$$
Hence, the empirical formula is $$= CH_2O$$.

SIMILAR QUESTIONS

Mole Concept

$$14$$ g of an element X combines with $$16$$ g of oxygen. On the basis of this, which of the following statement is correct? [At.wt of oxygen $$= 16$$]

Mole Concept

The relative number of atoms of different elements in a compound are as follows: $$A =$$ $$1.33$$, $$B =$$ $$1$$ and $$C$$ $$=$$ $$1.5$$. The empirical formula of the compound is:

Mole Concept

The empirical formula and the percent composition of dimethyhydrazine, $$C_2H_8N_2$$ which is a colourless liquid used as a rocket fuel, are $$CH_4N, C:40\%$$, $$H: 13.3\% $$ and $$ N:46.7\%$$. If true enter 1, else enter 0.

Mole Concept

An experiment showed that in a lead chloride solution, 6.21 g of lead combined with 4.26 g of chlorine. The empirical formula of this chloride is:

Mole Concept

Determine the empirical formula of an oxide of iron which has $$69.9\%$$ iron and $$30.1\%$$ dioxygen by mass.

Mole Concept

The relative number of atoms of elements, $$X$$ and $$Y$$ in a compound is 0.25 and 0.5. The empirical formula of compound is:

Mole Concept

Two elements 'P' and 'Q' combine to form a compound. Atomic mass of 'P' is 12 and 'Q' is 16. Percentage of 'P' in the compound is 27.3. What will be the empirical formula of the compound?

Mole Concept

A compound containing $$80$$% $$C$$ and $$20$$% $$H$$ is likely to be :

Mole Concept

$$60\ gm$$ of an organic compound on analysis is found to have $$C = 24\ g, H = 4\ g$$ and $$O = 32\ g$$. The empirical formula of compound is:

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