Consider a reaction involing two reactants (A and B) in which the reaction is fi
ID: 818783 • Letter: C
Question
Consider a reaction involing two reactants (A and B) in which the reaction is first-order in reactant A and second-order in reactant B.
a. write the rate law for the reaction. k [A] [B]^2
b. overall rate order= 3
c. Identify how the reaction rate would change if...
i. [A] is doubled and [B] is held constant? Reaction rate will double.
ii. [A] is held constant and [B] is doubled? Reaction rate is quadrupled.
iii. [A] is tripled and [B] is doubled?
iv. [A] is doubled and [B] is halved?
d. When graphing a log-log plot to determine the order of each reactan, how do you determine which data points to plot?
I know this is probably basic, but i'm having difficulty figuring it out and when I plug in hypotheical numbers, i keep getting different answers. help!
Explanation / Answer
c) i)
rate of the reaction becomes double
ii)
rate of the reaction becomes 4 times
iii)
rate of the reaction becomes 12 times
iv)
rate of the reaction becomes 1/2 of the initial
d) if we take two reactents we cant draw log- log graph
only it is possible when one reactent is kept constant