Question

PRACTICE PROBLEMS CHEM 2 LAB Consider the following reaction A +3B C+ D Write a general rate equation for the reaction a. rite the rate equation for the reaction if I is 0 order with respect to B and first order with respect to A c. Determine the overall reaction rate d. What would be the effect on the rate if [A] is doubled? e. What would be the effect on the rate if B] is tripled?
Need help figuring out the answers and how to get it.

Answer 1

Given equation is A +3B C D According to Law of Mass action, the rate of a reaction is directly proportional to the product of the concentrations of the reactants. a) The general rate equation is rate-k [A] [B]b. where, a - the order of the reaction with respect to the reactant A b- the order of the reaction with respect to reactant B a, b may or may not be equal to the coefficients of the reactants in the stiochiometric equation. b) Given that the order of the reaction with respect to A 1 the order of the reaction with respect to B 0 Hence the rate law is Rate equation is rate k [A] c) Overall reaction rate -k[A] the overall order of the reaction a b 1 +0 1 d) Initial rate k [A] If the conc. of A is doubled, The rate of the reaction doubled if the conc. of reactant A is doubled. e) Intial rate k [A][B] rate- k[2A]-2 x k[A]- 2 x initial rate If the conc. of B is tripled, rate-k [A] [B]0-k[A] [3B]о-kA-initial rate The rate of the reaction does not change by changing the conc. of reactant B Rate does not change if [B] is tripled.