Question

How would adding the catalyst nitrogen monoxide (NO) affect this reaction?

2SO2(g) + O2(g) → 2SO3(g)

A.
NO increases the rate at which SO3 molecules are formed.
B.
NO reacts with SO3 to produce more SO2 molecules.
C.
NO decreases collisions between the SO2 and O2 molecules.
D.
NO increases the concentration of the SO2 and O2 molecules.
E.
NO increases the activation energy of the SO2 and O2 molecules.

Answer 1

A

Step-by-step explanation:

Because NO would increase the rate

Answer 2

Answer: The correct answer is Option A.

Step-by-step explanation:

A catalyst is defined as the substance which increases the rate of the reaction without actually participating in the reaction.

This substance decreases the activation energy of the reactants, so as to proceed the reaction at a faster rate by increasing their effective collisions.

It does not affect the concentration of the reactants.

For the given reaction:

`2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)`

If we add NO, which is acting as a catalyst will increase the rate of the reaction to produce the products which is
`SO_3`

Hence, the correct answer is Option A.