Question

In: Chemistry

Which of the following statements are correct? Above the critical pressure, only the solid phase of...

Which of the following statements are correct?

Above the critical pressure, only the solid phase of a pure substance can exist.

Above the critical temperature, a gas may not be condensed to a liquid.

At the critical point, three phases (gas, liquid, and solid) may coexist at equilibrium.

Solutions

Expert Solution

The correct statement is

Above the critical temperature, a gas may not be condensed to a liquid even at higher pressures

From the phase diagram, above critical pressure not only solid but liquid phase can also exist.

That's why the statement is incorrect. Above the critical pressure, only the solid phase of a pure substance can exist.

From the phase diagram, at the critical point solid phase can never be exist

queen_honey_blossom answered 2 years ago
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