Consider the following reaction at equilibrium.

what effect will adding more so3 have on the system?
so2(g) + no2(g) ⇌ so3(g) + no(g)

the reaction will proceed backward

Explanation: adding more SO3 will increase the quantity of the product, and this will enhance the reaction to proceed backward forming more reactant

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e