CH3CHOCH4COis an example of fractional order reaction

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

It takes

1 h

for a first order reaction to go to

50 %

completion. The total time required for the same reaction to reach

87.5 %

completion will be

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

One gram of (

A

) decays by

β

-emission to

0.125 g

in

200

years. The half-life period of the reaction is

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

aP + bQ \to Products

, when

[P]

is doubled keeping

|Q|

constant rate increases

2

times, when

[P]

is constant and

|Q|

is doubled, rate increases four times. The overall order is

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

What are elementary reactions?

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

The reaction

2 NO (g) + O_{2} (g) \to 2 {NO}_{2} (g)

is of the first-order. If the volume of the reaction vessel is reduced to

1 / 3,

the rate of the reaction would be

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

A first order reaction takes

40

minutes for

30 %

completion. Calculate the half life of reaction.

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

In a chemical reaction

A + 2 B \to

products, when concentration of

A

is doubled, rate of the reaction increases

4

times and when concentration of

B

alone is doubled rate continues to be the same. The order of the reactions is

MEDIUM

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

The rate of a reaction is found to depend upon two concentration variables. What should be the order of the reaction?

MEDIUM

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

For the chemical reaction

$2 O_{3} ⟶ 3 O_{2}$ , the reaction proceeds as follows

$O_{3} ⇌ O_{2} + O$ (Fast)

$O + O_{3} ⟶ 2 O_{2}$ , (Slow)

the rate law expression should be given as

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

The rate constant is same for

3

reactions of order

I

,

II

and

III

, respectively, the unit of concentration being in moles per litre. If the concentration of the reactant is unity, the rates of reaction

R_{1}, R_{2}, R_{3}

will be

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

The units for the rate constant and the rate of reaction are same for a reaction. What will be the order of the reaction?

MEDIUM

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

Decomposition of

H_{2} O_{2}

follows a first order reaction. In fifty minutes the concentration of

H_{2} O_{2}

decreases from

0.5

to

0.125 M

in one such decomposition. When the concentration of

H_{2} O_{2}

reaches

0.05 M

, the rate of formation of

O_{2}

will be:

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

Hydrolysis of ester is a first order reaction. For this reaction, the correct statement is

HARD

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

Gaseous cyclobutene isomerizes to butadiene in a first order process which has a '

K

' value of

3.3 \times 10^{- 4} s^{- 1}

at

153 ° C .

The time in minutes it takes for the isomerization to proceed

40 %

to completion at this temperature is_____. (Rounded off to the nearest integer)

HARD

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

What will be the order of the reaction for hydrolysis of methyl acetate with $NaOH$ by using the data provided?

Time $(\min) 0 5 10 15$
Volume of acid $(mL) 10.12 6.24 1.40 0.981$

MEDIUM

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

Graph plotted between

\log t_{1 / 2}

versus log concentration

(a)

is a straight line. What conclusion can you draw from the graph?

Question Image

$n =$ order of reaction

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

For a certain reaction between

X

and

Y,

the order with respect to

X

is

3

and that with respect to

Y

is

4 .

If the concentrations of both

X

and

Y

are tripled. the rate of reaction will increase by a factor of ________

MEDIUM

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

The time required for

60 %

completion of a first order reaction is

50 \min

. The time required for

93.6 %

completion of the same reaction will be

EASY

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

For the elementary reaction

M \to N

, the rate of disappearance of

M

increases by a factor of

8

upon doubling the concentration of

M

. The order of the reaction with respect to

M

is

HARD

Physical Sciences>Matter and Its Interactions>Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.>Chemical Reactions - Chemical processes, their rates, and whether or not energy is stored or released can be understood in terms of the collisions of molecules and the rearrangements of atoms into new molecules, with consequent changes in the sum of all bond energies in the set of molecules that are matched by changes in kinetic energy.

In the reaction,

P + Q \to R + S

the time taken for

75 %

reaction of

P

is twice the time taken for

50 %

reaction of

P

. The concentration of

Q

varies with reaction time as shown in the figure.The overall order of the reaction is:

Question Image

${CH}_{3} CHO \to {CH}_{4} + CO$ is an example of fractional order reaction.

Important Questions on Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.

Learn and Prepare for any exam you want !

CH3CHO→CH4+CO is an example of fractional order reaction.

Important Questions on Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.

Learn and Prepare for any exam you want !

${CH}_{3} CHO \to {CH}_{4} + CO$ is an example of fractional order reaction.