Andrew's worked on a temporary gas (so called at that time) and derived the condition to liquefy the permanent gases (so called at that time) Andrew studied isotherms of CO_(2) and obtained the required condition for liquefaction of gas T_(gas) lt T_(c) (critical temperature) .

Andrew's worked on a temporary gas (so called at that time) and derive

1.	Andrew's worked on a temporary gas (so called at that time) and derived the condition to liquefy the permanent gases (so called at that time) Andrew studied isotherms of CO_(2) and obtained the required condition for liquefaction of gas T_(gas) lt T_(c) (critical temperature) .
Answer» SOLUTION :Andrew studied isotherms of `CO_(2)` and found that even `CO_(2)` (the so called TEMPORARY gas at that time) can not LIQUEFIED above `31.1^(@)C` the critical temperature of `CO_(2)` although pressure may be INCREASED MANIFOLDS .