Question

The reaction of UO2 with hydrogen ion in aqueous solution 2 UO2 4 H U4 UO22 2 H2O is second order in UO2 and third order overall. Complete the rate law for this reaction in the box below. Use the form k[A]m[B]n... , where '1' is understood for m, n ... (don't enter 1) and concentrations taken to the zero power do not appear. Rate

Answer 1

Answer: $rate=k[UO_2^+]^2[H^+]$

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.

The balanced chemical reaction is:

$2UO_2^+4H^+\rightarrow U^{4+}+UO_2^{2+}+2H_2O$

$rate=k[UO_2^+]^n[H^+]^m$

where k = rate constant

n = order with respect to $UO_2^+$ = 2

m =  order with respect to $H^+$ = ?

n+ m = 3

2+ m = 3

m = 1

Thus m =  order with respect to $H^+$ = 1

$rate=k[UO_2^+]^2[H^+]^1$