devarshi-dt-logo

Question:

An unknown chlorohydrocarbon has 3.55% of chlorine. If each molecule contains only one chlorine atom, what is the molar mass of the chlorohydrocarbon?

6.023×10⁹

6.023×10²³

6.023×10²¹

6.023×10²⁰

Solution:

Let the molar mass of the chlorohydrocarbon be M g/mol.
The percentage of chlorine in the chlorohydrocarbon is 3.55%.
Since each molecule contains only one chlorine atom, the mass of chlorine in one mole of the chlorohydrocarbon is 35.5 g/mol (molar mass of chlorine).
Therefore, the mass of chlorine in one mole of the chlorohydrocarbon is (3.55/100) * M g/mol.
Since there is one chlorine atom per molecule, we can set up the following equation:
(3.55/100) * M = 35.5
M = (35.5 * 100) / 3.55
M = 1000 g/mol
Therefore, the molar mass of the chlorohydrocarbon is 1000 g/mol. None of the provided options match this result. There may be an error in the question or options provided.