1. Tardigrade
  2. Question
  3. Chemistry
  4. For the reaction A2(g) + 2B2 leftharpoons 2C2(g) the partial pressure of A2 and B2 at equilibrium are 0.80 atm and 0.40 atm respectively. The pressure of the system is 2.80 atm. The equilibrium constant Kp will be

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Q. For the reaction $A_{2}(g) + 2B_{2} \rightleftharpoons 2C_{2}(g)$
the partial pressure of $A_{2}$ and $B_{2}$ at equilibrium are $0.80\, atm$ and $0.40\, atm$ respectively. The pressure of the system is $2.80\, atm$. The equilibrium constant $K_p$ will be

Equilibrium

Solution:

$A_{2}(g )+2B_{2}(g)\rightleftharpoons 2C_{2}(g)$
$P_{A_{2}} = 0.80$ atm
$P_{B_{2}} = 0.4$ atm
Total pressure o f the system $= 2.8$ atm
$\therefore P_{c_{2}} = 2.8 -0.8 -0.4 =1.6$
$K_{p} =\frac {P^{2}_{C_2}}{P_{A_2} \times P^{3}_{B_2}} =\frac {(1.6)^{2}}{0.8 \times (0.4)^{2}}=20$