Question

1. a chemist is studying the following reaction: no + no₂ -> n₂o₃. she places a mixture of no and no₂ in a sealed container and measures how long it takes to achieve equilibrium. she then devises a system of removing all the n₂o₃ that is produced in this reaction. what effect will this have?

a) the reaction will continue until all the no or all the no₂ is used up.
b) the system will reach chemical equilibrium more quickly than before.
c) the reaction will not occur at all.
d) the system will reach chemical equilibrium more slowly than before.

1. chemical equilibrium is a state of balance in which there is no net change in chemical composition over time.

true
false

1. in a reversible reaction, a chemical equilibrium occurs when the rate of the forward reaction is equal to the rate of the reverse reaction.

true
false

Explanation:

For question 22, according to Le - Chatelier's principle, when the product ($N_2O_3$) is continuously removed, the forward reaction will keep proceeding until the limiting reactant (either NO or $NO_2$) is used up. For question 23, by definition, chemical equilibrium is a state with no net change in chemical composition over time. For question 24, in a reversible reaction, chemical equilibrium is established when the forward and reverse reaction rates are equal.

Answer:

1. A. The reaction will continue until all the NO or all the $NO_2$ is used up.
2. True
3. True