# Ch. 15 Hw Chem

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question
According to the collision model, why does increasing the temperature increase the rate of a reaction?
Increasing the temperature increases the number of collisions that can occur with enough energy for the reaction to occur.
question
Use the graph to calculate the average rate of the reaction between 0 and 25 s.
The average rate of reaction between two points = difference in concentration / time taken Concentration of Br2 at 25 sec = 0.75 M (Approximately) Thus, Average rate of reaction = (1.00 - 0.75) / 25 = 0.25 / 25 = 0.01 L / mol..sec
question
H2+2ICl?I2+2HCl, rate=k[H2][ICl] What is the overall reaction order?
rate = k [H2] [ICl] 1. Overall reaction order = 1+1 = 2
question
What would happen to the rate if [H2] were doubled?
The rate would double.
question
What would happen to the rate if [ICl] were doubled?
The rate would double.
question What is the reaction order with respect to A?
2!
question What is the reaction order with respect to B?