Worksheetschemical kinetic part 2
Total questions: 10
Worksheet time: 9mins
Name
Class
Date
1.
Which of the following is expressions represents correctly rate of following reaction?
X + Y → Z + Q ΔH = +22kj/mol
X + Y → Z + Q ΔH = +22kj/mol
a)
Rate = +Δ[X] / Δt
b)
Rate = +Δ[Y] / Δt
c)
Rate = +Δ[Z] / Δt
d)
Rate = -Δ[Q] / Δt
2.
What is the theory which explains how chemical reaction occurs?
a)
Diffusion
b)
Big Bang
c)
Collusion
d)
Evalusion
3.
Limestone chunks are reaction with hydrochloric acid solution at constant temperature with average speed. If we crash the chunks of limestone into powder how would speed of reaction change?
a)
Reaction speeds up
b)
Reaction does not change
c)
Reaction slows down
d)
Reaction stops
4.
To measure rate of reaction, either decreasing mass of solid reactant or increasing volume of gaseous products are used.
Which of the following reactions uses increasing volume of gaseous product method to measure the its rate?
Which of the following reactions uses increasing volume of gaseous product method to measure the its rate?
a)
Reaction between iron metal and air
b)
Reaction between sodium hydroxide and nitric acid
c)
Reaction between table salt and water
d)
Reaction between hydrochloric acid and aluminum metal
6.
A chemical reaction that requires energy is a
a)
exothermic reaction
b)
endothermic reaction
c)
over reaction
6.
A chemical reaction that requires energy is a
a)
exothermic reaction
b)
endothermic reaction
c)
over reaction
7.
To slow down a chemical reaction you will do one of the following:
a)
Place the reactants in hot water
b)
Place the products in ice bath
c)
Place the reactants in a ice bath
d)
Keep stirring the reactants with a stirring rod
8.
What would be my the overall order of this rate law?
Rate=[A]2[B]1
Rate=[A]2[B]1
a)
0 Order
b)
1st Order
c)
2nd Order
d)
3rd Order
9.
step 1: O3 -> O2 + O
step 2: O3 + O -> 2 O2
The oxygen atom (O) is considered to be a(n)...
step 2: O3 + O -> 2 O2
The oxygen atom (O) is considered to be a(n)...
a)
reactant
b)
catalyst
c)
reaction intermediate
d)
activated complex
10.
A unimolecular reaction
(A --> products)
with k = 123.4 s-1 initially has 3.0 M of A. How long will it take for the amount of reactant to be 0.75 M?
(A --> products)
with k = 123.4 s-1 initially has 3.0 M of A. How long will it take for the amount of reactant to be 0.75 M?
a)
0.018 s
b)
0.011 s
c)
280 s
d)
0.0081 s
100 %
