a' and 'b' are van der Waals' constant for gases. Chlorine is more easily liquefied than ethane because

Options

A. a for `Cl_(2) lt a ` for `C_(2) H_(6)` but b for `Cl_(2) gt b` for `C_(2) H_(6)`
B. a for `Cl_(2) gt a ` for `C_(2) H_(6)` but b for `Cl_(2) lt b` for `C_(2) H_(6)`
C. a and b for `Cl_(2) gt a` and b for `C_(2) H_(6)`
D. a and b for `Cl_(2) lt a ` and b for `C_(2) H_(6)`

Answer

B

Explanation

van der Waals. constant .a. is a measure of intermolecular forces of attraction and .b. is a measure of size of gas molecules. Larger the intermolecular attractions and smaller the size of molecules, more will be the ease of liquefication.