Question

the reaction shifts to the left (reactants). what happens to the amount of no₂ as the reaction shifts? 2no(g) + o₂(g) ⇌ 2no₂(g) + 114 kj the amount of no₂ does not change. the amount of no₂ goes down. the amount of no₂ goes up.

Explanation:

In the equilibrium reaction \(2NO(g)+O_2(g)
ightleftharpoons 2NO_2(g)+114\ kJ\), a left shift means the reaction proceeds in the reverse direction (towards reactants). So, \(NO_2\) (a product) will decompose to form \(NO\) and \(O_2\) (reactants). Thus, the amount of \(NO_2\) decreases.

Answer:

The amount of \(NO_2\) goes down.