Q1. According to the "collision theory" model, why does the rate of a reaction increase when temperature increases? I. There are more collisions per second. II. The molecules are vibrating with a higher frequency. III. A greater proportion of the collisions between reactants have the required activation energy for the reaction to proceed a. I only b. II only c. III only d. I,II and III e. I and III only Q2. A reaction was found to be first order with a rate constant of3.4×10−4 s−1What percentage of the starting material would remain after 2 hours? a.8.65%b.96.0%c.90.3%d.4.00%e.99.9%Q3. The half-life of a rection was calculated at 300 seconds. What \% of starting material would remain after 900 seconds? a.25% Q1. According to the "collision theory" model, why does the rate of a reaction increase whentemperature increases?I.II.III.There are more collisions per second.The molecules are vibrating with a higher frequency.A greater proportion of the collisions between reactants have the required activation energyfor the reaction to proceeda.I onlyb.ll onlyc. III onlyd. I,II and IIIe. I and III onlyQ2. A reaction was found to be first order with a rate constant of 3.4 x 104 s¹¹What percentage of the starting material would remain after 2 hours?a. 8.65%b. 96.0%C.90.3%d. 4.00%e.99.9%Q3. The half-life of a rection was calculated at 300 seconds. What % of starting material wouldremain after 900 seconds?a. 25%

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Q1. According to the "collision theory" model, why does the rate of a reaction increase when temperature increases? I. There are more collisions per second. II. The molecules are vibrating with a higher frequency. III. A greater proportion of the collisions between reactants have the required activation energy for the reaction to proceed a. I only b. II only c. III only d. I,II and III e. I and III only Q2. A reaction was found to be first order with a rate constant of3.4×10−4 s−1What percentage of the starting material would remain after 2 hours? a.8.65%b.96.0%c.90.3%d.4.00%e.99.9%Q3. The half-life of a rection was calculated at 300 seconds. What \% of starting material would remain after 900 seconds? a.25%

Q1. According to the "collision theory" model, why does the rate of a reaction increase when
temperature increases?
I.
II.
III.
There are more collisions per second.
The molecules are vibrating with a higher frequency.
A greater proportion of the collisions between reactants have the required activation energy
for the reaction to proceed
a.
I only
b.
ll only
c. III only
d. I,II and III
e. I and III only
Q2. A reaction was found to be first order with a rate constant of 3.4 x 104 s¹¹
What percentage of the starting material would remain after 2 hours?
a. 8.65%
b. 96.0%
C.
90.3%
d. 4.00%
e.
99.9%
Q3. The half-life of a rection was calculated at 300 seconds. What % of starting material would
remain after 900 seconds?
a. 25%

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