RATE OF REACTION
Rate of reaction is defined as the ______concentration of reactants per time
Decrease
The rate constant is dependent on
T
Molecularity of reaction refers to:
Number of reactant molecules taking part in elementary step
For the reaction A → B, the rate is given by k[A]². The order is:
2
N2(g)+3H2(g)→2NH3(g)
Homogeneous
Represents rate law for reaction: A + B → C?
rate = k[A][B]
The unit of rate constant for a first-order reaction is:
time-1
A reaction where reactants form only one product directly is called:
Single Reaction
Which can have fractional value?
Order of reaction
NO2+CO→NO+CO2 , Rate=k[NO2][CO]
Elementary reaction
How does temperature generally affect the rate of reaction?
It increases the rate of reaction.
If temperature increases, rate constant:
A reaction where product of first step becomes reactant of next is:
Consecutive/Series
The sum of powers of concentration terms in rate law is:
Order of Reaction
2H2O2→2H2O+O2 , Rate=k[H2O2]
Non-elementary
What does a negative rate indicate when measured for reactant concentration?
Decrease in reactant concentration over time.
The slope of plot ln k vs 1/T gives:
-E/R
Activation energy is:
Minimum energy needed for reaction
Does order of reaction always match molecularity?
No
2H2O2---->2H2O+O2 , MnO2=Catalyst
Catalytic Reaction
Name two factors that affect the rate of reaction of homogeneous reactions besides temperature.
concentration and pressure
Rate constant doubles when temperature increases from 300 K to 310 K, approximate Ea is:
55 kJ/mol
What is an activated complex (or transition state)?
A short-lived, high-energy intermediate formed during a reaction.
What is the order of reaction if the rate is independent of concentration?
Zero
A→B and A→C
Multiple Reaction---> Parallel Reaction