Determine the value of a in order for Kc to be the same value as Kp. aA(g) + 2B(g) ←→ 3C(s) + 5D(g)

Question

Answer choices

6

5

4

None of the above

2

Answer 1

Since P/RT = C for gases, we can derive that K_C = K_P(RT)^-Δng where Δng is the change in moles of gas in the reaction. This leads to the conclusion that for K_p and K_c to be identical, the moles of gas of the products has to equal the moles of gas of the reactants. (A coefficient is 3)