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The structural formulae of compounds Q a...

The structural formulae of compounds Q and R are shown below:

Which statement about compounds Q and R is correct?

A

They belong to the same homologous series.

B

They have the same percentage composition by mass.

C

They have the same boiling point.

D

They have different general formulae.

Text Solution

Verified by Experts

The correct Answer is:
B
Compounds Q and R have the same molecular formula, `C_(5)H_(10)`. Hence they have the same percentage composition by mass.
Compound Q is an unsaturated hydrocarbon and compound R is a saturated hydrocarbon. They do not belong to the same homologous series.
Compounds Q and R are different compounds. Hence, they have different boiling points.
Compounds Q and R have the same general formula, `C_(n)H_(2n)`.
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