Question

# A.) Express the equilibrium constant for the combustion of ethane in the balanced chemical equation. 2C2H6(g)+7O2(g)⇌4CO2(g)+6H2O(g)...

A.) Express the equilibrium constant for the combustion of ethane in the balanced chemical equation.

2C2H6(g)+7O2(g)⇌4CO2(g)+6H2O(g)

 K=[C2H6]2[O2]7 / [CO2]4[H2O]6 K=[CO2]4 / [C2H6]2[O2]7 K=K=[CO2]4[H2O]6 / [C2H6]2[O2]7 K=[CO2][H2O] / [C2H6]2[O2]

B.)Consider the chemical equation and equilibrium constant at 25∘C:

H2(g)+I2(g)⇌2HI(g) , K=6.2×102

Calculate the equilibrium constant for the following reaction at 25∘C:

HI(g)⇌12H2(g)+12I2(g)

Express the equilibrium constant to two significant figures.

C.) Consider the following reaction and corresponding value of Kc:

H2(g)+Br2(g)⇌2HBr(g) , Kc=1.9×1019 at 25∘C

What is the value of Kp at this temperature?

D.) Choose an expression for the equilibrium constant (Kc) for the following chemical equation:

2K2O2(s)+2CO2(g)⇌2K2CO3(s)+O2(g)

Choose an expression for the equilibrium constant () for the following chemical equation:

 Kc=[K2CO3]2[O2][K2O2]2[CO2]2 Kc=[K2O2]2[CO2]2[K2CO3]2[O2] Kc=[CO2]2[O2] Kc=[O2][CO2]2