350 K તાપમાને શુદ્ધ પ્રવાહી 'P' અને 'Q'ના બાષ્પદબાણ અનુક્રમે 450 અને 750 mm Hg છે. જો કુલ બાષ્પદબાણ 600 mm Hg હોય, તો પ્રવાહી 'P' અને 'Q' ના મોલ અંશ અનુક્રમે _અને___.

A 0.7 અને 0.3
B 0.4 અને 0.6
C 0.6 અને 0.4
D 0.5 અને 0.5

Verified Solution

Answer & Solution

Correct Answer

(D) 0.5 અને 0.5

Step-by-step Solution

Detailed explanation

\( P_{total} = X_P P_P^0 + (1 - X_P) P_Q^0 \) \( 600 = X_P (450) + (1 - X_P) (750) \)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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