Question

A chemical equilibrium between gaseous reactants and products is shown. N2(g) + 3H2(g) ⇌ 2NH3(g) How will the reaction be affected if the pressure on the system is decreased?anwers: a.It will shift toward the reactant side because the reactant side has more moles of gas than the product side.b.It will shift toward the product side as there are more oxygen atoms in the gas on the product side. Incorrectc.It will shift toward the reactant side as there is lower pressure on the reactant side.d.It will shift toward the product side as there is higher pressure on the product side.

Answer 1

Answer:"

`A`

Step-by-step explanation:

Here, we want to know the resultant effect of a pressure decrease

We start by comparing the volumes (in terms of number of moles) on the reactant and product side

We have 4 moles on the reactant side while we have 2 moles on the product side

What we have here is thus a decrease in volume. To shift the reaction to the product side, pressure has to be increased since volume has increased. However, since pressure is decreased, it is the reverse reaction that would be favored

Thus, we have the correct answer choice as:

"It will shift toward the reactant side because the reactant side has more moles of gas than the product side."