Question

The number of statement/s, which are correct with respect to the compression of carbon dioxide from point (a) in the Andrews isotherm from the following is ______

A. Carbon dioxide remains as a gas upto point (b)
B. Liquid carbon dioxide appears at point (c)
C. Liquid and gaseous carbon dioxide coexist between points (b) and (c)
D. As the volume decreases from (b) to (c), the amount of liquid decreases

Answer 1

Answer: 2

At
(a) $\to C{O}_2$ exist as gas
(b) $\to$ liquefaction of $C{O}_2$ starts
(c) $\to$ liquefaction ends
(d) $\to C{O}_2$ exist as liquid.
Between (b) & (c) $\to$ liquid and gaseous $C{O}_2$ co-exist.
As volume changes from (b) to (c) gas decreases and liquid increases.
(A), (C) $\to$ correct