Question

What is `K_(eq)` for the reaction `2SO_3(g)`⇌ `2SO_2(g)` + `O_2 (g)`?

Answer 1

Unknown at this stage. But we can certainly write the equilibrium expression.

Explanation:

`2SO_3(g)rightleftharpoons2SO_2(g) + O_2(g)`

`K_c` `=` `([SO_2(g)]^2[O_2(g)])/([SO_3(g)]^2)`

This can be turned into an expression relating the partial pressures of each component at equilibrium.