Question

If the empirical formula of a compound is CH2 what is a possible molecular formula for the compound .plz answer fast​

Answer 1

Answer:

The Possible Formula Could be C2H4.

This is because:

Empirical formula of a compound is CH2. The mass of 1 litre of this gas is exactly equal to that of 1 litre of nitrogen under similar conditions.

Under similar conditions, same volume of two gases corresponds to same number of moles of two gases. The number of moles of two gases are same and the mass is also same. This means that molecular weight of two gases is same. Thus, the molecular weight of the compound is equal to the molecular weight of nitrogen. It is equal to 28 g/mol. Hence, the molecular formula of the gas is C2 H4

​Note: Atomic weights of C and H are 12 g/mol and 1 g/mol respectively. Hence the molecular weight of C2H4  will be 2(12)+4(1)=28 g/mol.

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Answer 2

The possible molecular formula for the compound is C₂H₄

Explanation:

• The empirical formula of a compound is CH₂
• The empirical weight of the given compound is 14
• Molecular weight is 44
• The mass of one litre of gas is equal to the 1litre of nitrogen under similar conditions
• The Number of moles of two gases is the same and the mass is also the same.
• The Molecular weight of the compound is equal to the molecular weight of nitrogen.
• Atomic weight of carbon and hydrogen are 12 and 1 respectively.
• Hence the molecular weight of the compound will be 28
• Thus the compound is C₂H₄ with a molecular weight of 28