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Technical KnowledgeHRRL Assistant Engineer Chemical 2026
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For predicting VLE of mixtures that show significant liquid-phase non-ideality at low-to-moderate pressures, which is correct?

A

Dalton’s law alone can predict VLE of all real mixture.

B

Raoult’s law without activity coefficients is sufficient.

C

Modified Raoult’s law with activity coefficients (Wilson/NRTL/UNIQUAC) should be used; include fugacity corrections if vapor-phase non-ideality is significant.

D

Fugacity coefficients are never required.

Correct Answer

⚙️ TE • Technical Verified SolutionTechnical KnowledgeHRRL Assistant Engineer Chemical 2026
Option C

Modified Raoult’s law with activity coefficients (Wilson/NRTL/UNIQUAC) should be used; include fugacity corrections if vapor-phase non-ideality is significant.

Quick Summary:

Practice and solve "For predicting VLE of mixtures that show significant liquid-phase non-ideality at low-to-moderate pr..." for Technical Knowledge - HRRLAssistant Engineer Chemical 2026. The correct answer is Option C: Modified Raoult’s law with activity coefficients (Wilson/NRTL/UNIQUAC) should be used; include fugacity corrections if vapor-phase non-ideality is significant.. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.

Concept & Solution

Practice and solve "For predicting VLE of mixtures that show significant liquid-phase non-ideality at low-to-moderate pr..." for Technical Knowledge - HRRLAssistant Engineer Chemical 2026. The correct answer is Option C: Modified Raoult’s law with activity coefficients (Wilson/NRTL/UNIQUAC) should be used; include fugacity corrections if vapor-phase non-ideality is significant.. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.

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