3 I- (aq) +H3AsO4 (aq) + 2 H+ = I3- (aq) + H3AsO3 (aq) + H2O (l) is found to be first order with respect to each of the reactants. write the rate law. what is the over all order?

first order reaction

rate = k(I^-)(H3AsO4)(H^+)

Since the rate law is first order with respect to EACH reactant, then each exponent for each reactant is 1. The overall order is the sum of each or1+1+1 = 3 overall.

To determine the rate law for the given reaction, we can look at the coefficients of the reactants in the balanced equation.

The balanced equation is: 3 I- (aq) + H3AsO4 (aq) + 2 H+ = I3- (aq) + H3AsO3 (aq) + H2O (l)

Since the reaction is found to be first-order with respect to each of the reactants, the rate law can be written as:

Rate = k [I-]^a [H3AsO4]^b [H+]^c

Where "k" is the rate constant and "a, b, c" are the orders with respect to each reactant.

From the coefficients in the balanced equation, we can see that the stoichiometric coefficients for the reactants are:
[I-]: 3
[H3AsO4]: 1
[H+]: 2

Therefore, the rate law becomes:

Rate = k [I-]^3 [H3AsO4]^1 [H+]^2

The overall order of the reaction is the sum of the individual orders (a + b + c), so in this case, the overall order is:

Overall order = 3 + 1 + 2 = 6

To write the rate law for the given reaction, we need to determine the exponents, or orders, of each reactant.

The given reaction is:
3 I- (aq) + H3AsO4 (aq) + 2 H+ = I3- (aq) + H3AsO3 (aq) + H2O (l)

We are told that the reaction is first order with respect to each of the reactants. This means that the rate of the reaction is directly proportional to the concentration of each reactant raised to the power of 1.

Therefore, the rate law can be written as follows:
rate = k [I-]^1 [H3AsO4]^1 [H+]^1

Where:
- rate is the rate of the reaction
- k is the rate constant
- [I-], [H3AsO4], and [H+] are the concentrations of I-, H3AsO4, and H+ respectively.

To determine the overall order of the reaction, we need to add up the exponents from the rate law. In this case, since each exponent is 1, the overall order of the reaction is simply the sum of the exponents, which is 3.
Therefore, the overall order of the reaction is 3.