Choose correct statement/s:a)Phase diagram is only up to critical temperatureb)Phase diagram is sum of infinite cooling curvesc)Freezing point of solutions are not constantd)All are true statementsCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Explanation:

Phase diagram: It is a graphical representation of the various phases of a substance at different pressures and temperatures. It helps to determine the phase of a substance at any given set of conditions.

Phase diagram is only up to critical temperature: This statement is true. The critical temperature is the temperature above which a substance cannot exist in the liquid state, regardless of pressure.

Phase diagram is sum of infinite cooling curves: This statement is true. A phase diagram is obtained by plotting the equilibrium conditions between the different phases of a substance as a function of temperature and pressure. This involves cooling the substance from high temperatures to low temperatures while maintaining equilibrium between the different phases.

Freezing point of solutions are not constant: This statement is true. The freezing point of a solution depends on the concentration of the solute in the solvent. As the concentration increases, the freezing point decreases. This phenomenon is known as freezing point depression.

Therefore, all the given statements are correct.

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