Question

1 litre of hydrocarbon weighs as much as one litre of CO2. The molecular formula of the hydrocarbon is
a>C3H6
b>C3H8
c>C2H6
d>C2H4​

Answer 1

Answer:

Option ( b )

Explanation:

1 mole of CO₂ = 22.4 litres

⇒ 44g of CO₂  = 22.4 litres

⇒ x g of CO₂ = 1 litre

⇒ x = 44g / 22.4 l = 1.96 g

Therefore for 1 litre it must have a molecular mass of 1.96 g.

According to the given options, 1 mole of Propane ( C₃H₈ ) weighs 44g. Therefore 1 litre this will weigh 1.96 g.

Hence option ( b ) is the right option.