Consider the reaction mechanism shown here.

Fill in Step $1$ and then answer the questions

that follow.

a$.$ Do you think it's likely that the overall

reaction might also occur by a single$-$step

mechanism? Why or why not?

Stcp $1$

$stcp2$

$\frac{H}{O}OBr+HBr2$HOBr

last

step $32HBr+2$HOBr$2H_{7}O+2Br?$

last

Overall $4HBr+O_{2}2H_{2}O+2B{r}_2$

b$.$ If a catalyst were found that could increase the rate of the third step in the mechanism, how

would this affect the rate of the overall reaction? Explain.

c$.$ Decide if the following statements are true or false.

T $F$ HOOBr is an intermediate

T $F$ HOBr is a catalyst

$TF$ The overall reaction is elementary

T $F$ Step $2$ is bimolecular

T $,$ F Step $1$ is the rate determining step