Question

For the reaction

N2(g)+3H2(g)⇌2NH3(g)

Kp = 3.80×10⁻³ at 253 ∘C . What is K for the reaction at this temperature?

Enter your answer numerically.

Answer 1

Solution :-

formula to calculate the Kp form the K is

Kp = K* (RT)^delta n

delta n= sum of coefficient of product - sum of coefficient of reactant

           = 2 - (3+1)

           = -2

now lets calculate the K

Kp = K* (RT)^delta n

253 C + 273 = 526 K

3.80*10^-3 = K * (0.08206 L atm per mol K * 526 K)^-2

3.80*10^-3/ (0.08206 L atm per mol K * 526 K)^-2 = K

7.08 = K

So the K value is 7.08 at the given temperature.