16.1 Rate Expression & Reaction Mechanism

The rate information below was obtained for the following fourth order reaction at a constant temperature: 

5Br^– (aq) + BrO₃^– (aq) + 6H⁺ (aq) → 3Br₂ (aq) + 3H₂O (l)

Which rate expression is consistent with the data?

The rate information below was obtained for the following reaction at a constant temperature: 

C₂H₅Br (aq) + OH^– (aq) → C₂H₅OH (aq) + Br^– (aq)

What is the correct equation to calculate the value of the rate constant, k?

The mechanism for the following reaction between nitrogen(II) oxide and carbon monoxide is shown.

NO₂ (g) + CO (g) → NO (g) + CO₂ (g)

      Step 1:   NO₂ + NO₂ ⇌ N₂O₄   fast step

      Step 2:   N₂O₄ + 2CO → 2NO + 2CO₂   slow step

Which rate expression is consistent with the mechanism?

The rate information below was obtained for the following reaction of aqueous solutions of F and G, in the presence of a homogeneous catalyst, H, 

2F + 3G → J + 2K

When the concentrations of F and G are doubled, the rate of reaction increases by a factor of four.

When the concentrations of F and H are doubled, the rate of reaction increases by a factor of eight.

Which rate expression is consistent with the data?