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Chemical Engineering Thermodynamics

Q1:

What is the value of ln y (where y = activity co-efficient) for ideal gases ?

A Zero

B Unity

C Infinity

D Negative

ANS:A - Zero

For ideal gases, the activity coefficient (𝑦y) is equal to 1. In this case, the natural logarithm of 𝑦y (ln 𝑦y) is equal to zero. So, the correct answer is: Zero



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