Pre$-$Equilibria Conditions in Reaction Mechanisms

$5$Br$-($aq$)+$ BrO$3-($aq$)+6$H$+($aq$)-->3$Br$2($l$)+3$H$2$O$($l$)$

The above reaction is expected to obey the mechanism:

BrO$3-($aq$)+$ H$+($aq$)=$ HBrO$3($aq$)$ Fast equilibrium

HBrO$3($aq$)+$ H$+($aq$)=$ H$2$BrO$3+($aq$)$ Fast equilibrium

H$2$BrO$3+($aq$)+$ Br$-($aq$)-->($Br$-$BrO$2)($aq$)+$ H$2$O$($l$)$ Slow

$($Br$-$BrO$2)($aq$)+4$H$+($aq$)+4$Br$-($aq$)-->$ products Fast

Choose, from the list below, correct expressions for the overall rate law which are completely consistent with the above mechanism.

A Choose Correct or Incorrect

$1.$ k$[$H$+][$Br$-][$BrO$3-]2=-$d$[$BrO$3-]/$dt

$2.$ d$[$Br$-$BrO$2]/$dt $=$ k$[$Br$-][$BrO$3-][$H$+]2$

$3.-$d$[$BrO$3-]/$dt $=$ k$[$BrO$3-][$Br$-][$H$+]2$

$4.-$d$[$Br$-]/$dt $=$ k$[$Br$-][$BrO$3-][$H$+]$

$5.-$d$[$Br$-]/$dt $=$ k$[$BrO$3-][$Br$-][$H$+]2$

$6.$ k$[$Br$-][$H$+]2[$BrO$3-]=-$d$[$Br$-]/$dt

$1$ pts

Tries $0/15$

B$.$For each of the given rate expressions choose the correct expression for the rate constant $($k$)$ from the list below.

A$.$ k $=5\backslash$times $([($k$1$k$2$k$3)/($k$-1$k$-2)])$

B$.$ k $=[($k$1$k$2$k$3)/($k$-1$k$-2)]$

C$.$ k $=6\backslash$times $([($k$1$k$2$k$3)/($k$-1$k$-2)])$

D$.$ k $=5\backslash$times $[($k$1+$k$2+$k$3)/($k$-1+$k$-2)]$

E$.$ k $=$ k$1$k$2$k$3$k$-1$k$-2$

F$.$ none of the above

Choose the alpabet for each question

$1.-$d$[$H$+]/$dt

$2.-$d$[$BrO$3-]/$dt

$3.-$d$[$Br$-]/$dt

$1$ pts