In a dilute solution of elements X, Y etc. in liquid iron, the effect of Y on the activity co-efficient (fx) and the activity (hx) of X with respect to the Henrian 1wt% standard state is taken into account by the activity interaction co-efficient e^y_x, which is

A) $$e_x^y = \frac{{\partial \log hx}}{{\partial \left[ {\% Y} \right]}}$$ B) $$e_x^y = \frac{{\partial \log fx}}{{\partial \left[ {\% Y} \right]}}$$ C) $$e_x^y = \frac{{\partial hx}}{{\partial \left[ {\% Y} \right]}}$$ D) $$e_x^y = \frac{{\partial fx}}{{\partial \left[ {\% Y} \right]}}$$

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Correct Answer: Option B

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In a dilute solution of elements X Y etc in liquid...

In a dilute solution of elements X, Y etc. in liquid iron, the effect of Y on the activity co-efficient (fx) and the activity (hx) of X with respect to the Henrian 1wt% standard state is taken into account by the activity interaction co-efficient eyx, which is

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In a dilute solution of elements X, Y etc. in liquid iron, the effect of Y on the activity co-efficient (fx) and the activity (hx) of X with respect to the Henrian 1wt% standard state is taken into account by the activity interaction co-efficient e^y_x, which is