WorksheetsKINETICS AND STABILITY
Total questions: 30
Worksheet time: 22mins
Which of the temperature condition can be affected rate of reaction become increase?
In ice bath
In tap water
In water bath
In water pool
A temperature increase causes the particles
to slow down
move faster
collide higher
in the right order
A possible second rate law overall order of a reaction is __________________
Rate = k [A]2[B]2
Rate = k [A][B]3
Rate = k [A]3 [B]
Rate = k [AB]2
A first order reaction will be observed to be an exponential decrease with time if concentration will be plotted against time. The statement is:
True
False
First order half-life is equal to:
1/k
k
0.693/k
0.105/k
Second order half-life is equal to:
1/k
k
1/ak
2K + 1
For a zero-order reaction, half-life is a changing parameter. The statement is:
True
False
Shelf-life (t90%) is the time during which at least 90% of the drug remains intact. The statement is:
True
False
The unit of first order rate constant is:
moles liter-1 second-1
liter- second-1 mole-1
second-1
moles-1 liter-1 second-1
Hydrolysis of drugs can be reduced by:
Storing in a dark place
Storing in a cool place
Storing in air tight container
Storing in an amber coloured container
An oily cream should NOT be stored in a metal container. The statement is:
True
False
Which of the following stability test is more realistic?
Accelerated stability testing
Long term stability testing
Malaysia falls under which of the following ICH climatic zones?
Zone II
Zone III
Zone IVa
Zone IVb
The testing duration of "Accelerated Stability Studies" is:
6 months
1 year
3 years
5 years
If i double the concentration of a reactant and the rate doubles, what order is it?
Zero order
First order
Second order
Order 66
Unit for rate constant is one of the striking differences between a zero and first order process?
True
False
zero-order reaction DOES NOT CHANGE WITH CONCENTRATION.
True
False
What are the units of k for the rate law: Rate = k[A], when the concentration unit is M?
s-1
M-1 s-1
M-2 s-1
M 2s-1
What is the meaning of the rate of reaction?
Decrease in amount of product
Decrease in amount of product against time
Increase in amount of products against time
Increase in amount of reactants against time
Pick the CORRECT statement, effective collisions only occur
A. at standard conditions
B. for gaseous reactions
C. for molecules at correct orientations
D. for molecules with low kinetics energy
According to collision theory, when temperature is increased
A. The number of particles with sufficient energy to collide also increases.
B. The number of particles per unit volume increases.
C. The kinetic energy of particles decreases.
D. The number of collision decreases.
Why does a higher concentration increase the rate of reaction?
it increases the amount of reactants
it lowers the activation energy
it increases the energy of particle collisions
it increases the frequency of particle collisions
In chemistry, the term Concentration means
to have more of the chemical in the solution
to think really hard about something
To add heat to the chemical
to crush the chemical into smaller pieces
