True or false? Please explain why. (a) Increasing the activity of a product in t

Question

True or false? Please explain why.

(a) Increasing the activity of a product in the cell’s chemical reaction must decrease the cell potential..

(b) For a binary two-phase system, the closer the point on a tie line is to a phase, the more of that phase is present.

(c) In a two-phase, two-component liquid-vapor system, mole fraction A = A,liquid + A,vapor.

(d) Doubling the stoichiometric coefficient in a chemical reaction will square the value of the equilibrium constant, will double Go , and will not change Eo .

Explanation / Answer

a) Ecell = E0cell - (0.06/n)log(activity of products/activity of reactants)

Thus, increasing the activity of products decreases the cell potential.

TRUE

b) False

d) delta G0 = -R*TlnKc

doubling the coefficients, squares the value of Kc and hence doubles the value of delta G0

TRUE

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