Reaction Rates
Rate Law
Reaction Mechanisms
Random Kinetics
Random Facts about Mrs. Clemons
100

For the reaction A + 3B -> 2C, How does the rate of disappearance of B compare to the rate of production of C?

The rate of disappearance of B is 3/2 the rate of appearance of C

100

Write the predicted rate law for the reaction

1A + 2B + 1C -> 2D + 1E

rate = k[A][B]2[C]

100

Write the overall reaction for the following mechanism:

Step 1: H2O2 + I- -> H2O + OI-

Step 2: H2O2 + OI- -> H2O + O2 + I-

2 H2O2 -> 2 H2O + O2

100

What percentage of material will persist after 60 minutes if it's half life is 30 minutes? 

25%

100

Where did Mrs. Clemons go to college (for Undergrad)?

Eastern Kentucky University (EKU)
200

For the reaction 2A + 3B -> 4C + 5D 

Which product has the greatest rate of appearance? And WHY?

Product D because it will appear by a factor of 5, whereas product C will appear by a factor of 4 (which is less than product D). 

200

For the rate law Rate = k[A][B]2

The overall order for this reaction is _____

3rd order

200

What is the intermediate in the following mechanism?

Step 1: H2O2 + I- -> H2O + OI-

Step 2: H2O2 + OI- -> H2O + O2 + I-

OI-

200

The energy needed for a reaction to proceed from reactants to products is called 

Activation Energy

200

What is Mrs. Clemons' favorite animal?

Owl(s)

300

In the combustion of methane, 

CH4 + 2 O2 -> CO2 + 2 H2

Which reactant has the greatest rate of disappearance?

O2

300

Rate = k[CHCl3]2[Cl]

If the concentration of CHCl3 doubles while the concentration of Cl2 is kept the same, the rate will 

Quadruple 

300

Write the rate law

Step 1: H2O2 + I- -> H2O + OI-    (slow)

Step 2: H2O2 + OI- -> H2O + O2 + I-   (fast)

rate = k[H2O2][I-]

300

True or False:

Catalysts do not alter the overall reaction and never appear in the rate law

True 

300

What is Mrs. Clemons' favorite color?

Turquoise

400

N2 + O2 -> 2NO

If the initial concentration of N2 was 0.500 M and the concentration of N2 was 0.450 M after 0.100 s, what is the rate of reaction?

0.500 M/s

400

A reaction is first order in A. If the rate constant of the reaction is 6.00 x 10-3 s-1, What is the half life of the reaction? 

115 s

400

What is the catalyst for the reaction?

Step 1: H2O2 + I- -> H2O + OI-

Step 2: H2O2 + OI- -> H2O + O2 + I-

I-

400

Collision theory assumes that the rate of reaction depends on _________ and ___________.

The energy of collisions and the orientation of colliding molecules 

400

How old is Mrs. Clemons?

25

500

If the rate of formation of ammonia (NH3) is 0.345 M/s, What is the rate of disappearance of H2

Nitrogen gas reacts with Hydrogen gas to create Ammonia.

N2 + 3 H2 -> 2 NH3

 0.518 M/s

500

The first order reaction has k = 8.00 s-1. If [A]0 = 0.500 M, how long will it take to make [A] = 0.200 M?

0.115 s

500

What is the molecularity of the rate determining step?

Step 1: H2O2 + I- -> H2O + OI-

Step 2: H2O2 + OI- -> H2O + O2 + I-

(Hint: how many reactants are present?)

Bimolecular 

500

True or False: 

The mechanism and activation energy both change when a catalyst is added.

True

500

What kind of dog does Mrs. Clemons have?

An Australian Shepherd

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