Question

For the reaction 2CH4(g)⇌C2H2(g)+3H2(g) K = 0.165 at 1560. ∘C . What is Kp for the reaction at this temperature? Express your answer numerically.

Answer 1

1) For the chemical reaction, 2CH_4(g) <-->C₂H_2(g) + 3H_2(g) , K= 0.165 at1560^o C. What is K_p for the reaction at thistemperature?

We know that Kp = Kc * (RT) ^Δn

Where T = Temperature = 1560 o = 1560 + 273 = 1883 K

R = gas constant = 0.0821 L atm / mol - K

Δn = No . of moles of gaseous products - No . of moles ofgaseous reactants

     = (1+3) - 2

     = 2

Plug the values we get Kp = 0.165 * ( 0.0821 * 1833 )²

                                        = 3736.76