In the gas-phase reaction 2 a + b ⇌ 3 c + 2 d, it was found that, when 1.00 mol a, 2.00 mol b, and 1.00 mol d were mixed and allowed to come to equilibrium at 25 °c, the resulting mixture contained 0.90 mol c at a total pressure of 1.00 bar. calculate
(i) the mole fractions of each species at equilibrium,
(ii) k, and
(iii) δrimage.

(i)The mole fractions are :

(ii)

(iii)ΔG = 1.974kJ

Explanation:

The given equation is :

⇄

Let be the number of moles dissociated per mole of

Thus ,

The initial number of moles of :

    +    ⇄     +

And finally the number of moles of

(ii)

Where ,

are the partial pressures of A,B,C,D respectively.

Total pressure = 1 bar .

∴

(iii)

Δ

ΔG =

clouds form

solid ice forms on leaves.

water droplets form on grass.

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)