It is the area of chemistry that is the study of reaction rates and reaction mechanisms.
100
What is a molecule that is in a very unstable state intermediate to the reactants and products in the chemical reaction ?
Activated Complex
100
What is the formula of surface area ?
Length x Width x 6
100
Find the rate law of A = B+D
[A] M rate m/s
0.072 0.013
0.144 0.014
0.144/0.072 = 2
rate proportional K [A] power 2
100
This can NEVER BE NEGATIVE in a chemical reaction.
Rate
200
What is that thing called that indicates how fast something changes with time ?
Rate
200
What is the other name of Enzymes in a chemical reaction ?
Catalyst(s)
200
This can be applied in solids only in reactions.
Surface Area
200
What is the general order of
rate proportional K [CO2] power 5
General Order = 5
200
What is an intermediate ?
A substance that forms in a middle of a chemical reaction.
300
What is reaction rate ?
It is the rate of formation of products or the rate of disappearance of reactants
300
What does a collision need in order for the chemical reaction to work ?
1) Enough energy
2) Correct orientation (direction)
300
What is rate law ?
It describes the way concentration affects reaction rate.
300
Determine the rate of the reaction rate between 20s and 40s
T(s) [NO2]
0 3.20 x 10 power -5
10 2.42 x 10 power -5
20 1.92 x 10 power -5
30 1.4 x 10 power -5
40 1.23 x 10 power -5
1.66 x 10 power -6
300
Reaction rates decrease with ...
Time
400
What affects rate ? :
a) temperature
b) gas composition
c) chemical acidity
a) temperature
400
A reaction is exothermic when the reactants are lower than the products in a table.
True or False ?
False, the products are lower than the reactants since it releases heat.
400
What is triangle in the reaction rate equations ?
It is a delta which means change in some quantity
400
Calculate the rate of the following reaction :
2N subscript 2 O subscript 5 = 4NO + O subscript 2
t(s) [NO2]
0 0
20 0.0046
40 0.0089
60 0.0127
80 0.0161
4.30 x 10 power -5 M/s
400
This only applies to gas.
Pressure
500
What is order ?
It is the exponent "n" in the rate law equation
500
If the concentrations of products in a reaction are decreasing what would be the sign of the expressions ?
Negative
500
What is the curved line in a graph that is going up while the other lined curves are going down in the graph ?
Products
500
What is the order of A+B = C
[A] (M) [B] (M) Rate M/s
0.08 0.06 0.012
0.08 0.03 0.006
0.04 0.06 0.003
rate proportional K [A] power 2 [B] power 2
500
What is catalysis ?
A substance that changes the rate of a chemical reaction without being consumed or changed.