Kinetic Study of the Reaction of Iodide Ions with Hydrogen Peroxide at Room Temperature NEET Questions

Organic Chemistry - Principles of Practical Chemistry

Kinetic Study of the Reaction of Iodide Ions with Hydrogen Peroxide at Room Temperature MCQ Questions


7.

The color formed in the H2O2–KI reaction is due to formation of

A.

I2

B.

KI

C.

IO⁻

D.

KI3

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ANSWER :

A. I2

8.

Rate of reaction between iodide and H2O2 is monitored by

A.

Volume change

B.

Color intensity

C.

Pressure change

D.

Mass loss

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ANSWER :

B. Color intensity

9.

The reaction of iodide and H2O2 follows

A.

Unimolecular rate law

B.

Bimolecular rate law

C.

Termolecular rate law

D.

Complex mechanism

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ANSWER :

B. Bimolecular rate law

10.

Which of the following is the rate-determining step in H2O2–KI reaction?

A.

Formation of I2

B.

Oxidation of I⁻

C.

Reaction of I2 with starch

D.

Decomposition of H2O2

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ANSWER :

B. Oxidation of I⁻

11.

The rate of formation of iodine in the reaction between H2O2 and KI is proportional to

A.

[H2O2] only

B.

[KI] only

C.

[H2O2][I⁻]

D.

Both B and C

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ANSWER :

D. Both B and C

12.
To observe iodine color, what reagent is added?
A.
Methyl orange
B.
Phenolphthalein
C.
Starch
D.
Water
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ANSWER :
C. Starch