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What is the efficiency of phase rule over Lever rule?

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in Engineering Chemistry I by (506k points)
What is the efficiency of phase rule over Lever rule?

(a) 25%

(b) 50%

(c) 75%

(d) 85%

The question was asked by my college director while I was bunking the class.

My question comes from Uses and Limitations of Phase Rule topic in division Phase Rule of Engineering Chemistry I

1 Answer

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Best answer
The correct choice is (d) 85%

Explanation: Since, phase rule works only under equilibrium conditions and also only a few parameters like composition, solubility, temperature can be determined, it has limitations over lever rule. Another point is it fails to explain the T-C relation.

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