Question

For a real gas, the compressibility factor $Z$ has different values at different temperature and pressures. Which of the following is not correct under the given condition?

• A. $Z<1$ at very low pressure
• B. $Z>1$ at high pressure
• C. $Z=1$ under all conditions
• D. $Z=1$ at intermediate pressure

Answer 1

Answer: (C)

$Z=1$ under all conditions

In case of a real gas, the value of compressibility factor $Z$ has different values of different temperature and pressure, thus , it's value can't be one under all conditions,

Ans. Option C.