Question

The reaction rate between reactants Z and Y is proportional to the cube of [Z]. What is the rate law for this reaction?

Answer 1

Answer:
`Rate=k[Z]^3`

Step-by-step explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

`Z+Y\rightarrow products`

`Rate=k[Z]^x[Y]^y`

k= rate constant

x = order with respect to Z = 3

y = order with respect to Y = 0

n = x+y = Total order

Thus rate law is written as:
`Rate=k[Z]^3[Y]^0` or
`Rate=k[Z]^3`

Answer 2

Base on the problem given, it shows that the rate law for this reaction is directly proportional. The relationship between the reactants Z and Y that is proportional to the cube of [Z], it shows the concentrations of reactants is expressed by the rate law.