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The driving force of the diffusion process in phase diagram is __________________

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The driving force of the diffusion process in phase diagram is __________________

(a) The slope in Gibbs free energy

(b) The slope in solubility

(c) The slope in temperature

(d) The slope in pressure

The question was posed to me in my homework.

My question is from Uses and Limitations of Phase Rule topic in chapter Phase Rule of Engineering Chemistry I

1 Answer

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Correct choice is (a) The slope in Gibbs free energy

To explain: Since the driving force (parameter defining force) is determined only by a small change in chemical composition with respect to temperature, the slope in the chemical composition will determine the driving force.

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