Given van der Waals constant for NH_3, H_2, O_2and CO_2are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied ?

Given van der Waals constant for NH_3, H_2, O_2and CO_2are respectivel

1.	Given van der Waals constant for NH_3, H_2, O_2and CO_2are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied ?
Answer» `CO_2` `NH_3` `O_2` `H_2` SOLUTION :`NH_3`