25
MCQ (Multiple Correct Answer)
At high pressure the following reaction is zero order.
$$2 \mathrm{NH}_3(g) \frac{1130 \mathrm{~K}}{\text { Platinum catalyst }} \mathrm{N}_2(g)+3 \mathrm{H}_2(g)$$
Which of the following options are correct for this reaction?
A
Rate of reaction = Rate constant
B
Rate of the reaction depends on concentration of ammonia
C
Rate of decomposition of ammonia will remain constant until ammonia disappears completely
D
Further increase in pressure will change the rate of reaction
26
MCQ (Multiple Correct Answer)
During decomposition of an activated complex
A
energy is always released
B
energy is always absorbed
C
energy does not change
D
reactants may be formed
27
MCQ (Multiple Correct Answer)
According to Maxwell, Boltzmann distribution of energy, ............. .
A
the fraction of molecules with most probable kinetic energy decreases at higher temperatures
B
the fraction of molecules with most probable kinetic energy increases at higher temperatures
C
most probable kinetic energy increases at higher temperatures
D
most probable kinetic energy decreases at higher temperatures
28
MCQ (Multiple Correct Answer)
In the graph showing Maxwell, Boltzmann distribution of energy ............. .
A
area under the curve must not change with increase in temperature
B
area under the curve increases with increase in temperature
C
area under the curve decreases with increase in temperature
D
with increase in temperature curve broadens and shifts to the right hand side
29
MCQ (Multiple Correct Answer)
Which of the following statements are in accordance with the Arrhenius equation?
A
Rate of a reaction increases with increase in temperature
B
Rate of a reaction increases with decrease in activation energy
C
Rate constant decreases exponentially with increase in temperature
D
Rate of reaction decreases with decrease in activation energy