For the reaction 4 nh3(g) + 5 o2(g) ⇌ 4 no(g) + 6 h2o(g) δh∘ = −904 kj which of the following changes will shift the equilibrium to the right, toward the formation of more products? for the reaction which of the following changes will shift the equilibrium to the right, toward the formation of more products? increasing the volume of the reaction vessel adding more water vapor removing o2(g) adding 1 atm of ne(g) to the reaction vessel increasing the temperature submitrequest answer

Increasing the volume of the reaction vessel.

Explanation:

Let us consider the following reaction:

4 NH₃(g) + 5 O₂(g) ⇌ 4 NO(g) + 6 H₂O(g) ΔH° = −904 kJ

To assess the effect of different changes on the equilibrium we need to consider Le Chatelier Principle: if a system at equilibrium undergoes a change (in pressure, volume, etc.), it will react to counteract such change.

Increasing the volume of the reaction vessel

If volume increases, pressure decreases according to Boyle's Law. Then, the system will try to increase pressure by shifting the equilibrium towards where there are more moles of gases, that is, to the right (10 moles of gases).

Adding more water vapor

If water vapor is added, the system will try to reduce its concentration by shifting the equilibrium towards the left.

Removing O₂(g)

If oxygen is removed, the system will try to increase its concentration by shifting the equilibrium towards the left.

Adding 1 atm of Ne(g) to the reaction vessel

Adding inert gases has no effect on the equilibrium.

Increasing the temperature

This is an exothermic reaction (ΔH° < 0). If temperature is raised, the system will try to decrease it, shifting the equilibrium towards the left to absorb heat.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6