Question of Exercise 1

Chemical Kinetics of Class 12

Question

For a reaction A (sol) B (sol) + C (sol), a reagent ‘X’ with molarity ‘M’ is used to follow the reaction. Reagent ‘X’ reacts with all species A, B and C.  

Time

0

t

Volume of reagent

V0

Vt

V

  The n factor of A, B and C with the reagent is α, β and γ respectively and that of the reagent with A, B and C is a, b and c respectively. Which of the following expressions gives the volume of the reagent ‘X’ used just to react with B at t = .

Answer

Option 1 aβ/bα V0

Option 2 aγ/cα V0

Option 3 aβ/bα Vt

Option 4 Vt

Frequently Asked Questions

Which of the following is allylic halide

A: (1 - Bromoethyl) benzene

B: Benzyl chloride

C: 1 - Bromo benzene

D: 3 - Chloro cyclohex - 1 - ene

 

Solution:

Explanation:

Considering

Final Answer: 

The correct option is D: 3 - Chloro cyclohex - 1 - ene.

 

 

What is the colour of copper sulphate crystals What happens when it is heated

What happens when it is heated

Solution:

Explanation:-

  • Copper sulfate is blue in colour when it is heated it lost water of crystallization and becomes white.

 Blue white

Final Answer:-

Water of crystallization is lost during heating of copper sulfate and color changes from Blue to White 

 

Rubber is a

A: conducting polymer

B: oriented polymer

C: elastomer

D: strong commercial fabric

 

Solution:

 Explanation:-

  •  Polymers which have elastic properties are called elastomers. 
  • At microscopic level rubber has various disorganized clusters and long molecular flexible chains which provide it elastic property.

 Final Answer:-

 ( C ) rubber is a elastomer 

 

What is a glycosidic linkage

Solution:

Explanation:-

 The covalent bond  which joins  the hemiacetal group of a saccharide  and hydroxyl group of

another molecule(may or may not be saccharide ) is called glycosidic Bond. 

The common atom which joins the two groups  can be oxygen(O), Nitrogen(N) and Sulfur(S) 

so the name of the bond  becomes O-glycosidic Bond and N-glycosidic Bond and S- glycosidic Bond respectively. 

Final Answer:-

 There is the linkage between the hemiacetal group of the saccharide and some other group and this link is called glycosidic linkage.

 

How will you convert aniline to phenol

Solution:

Explanation:-

  • First aniline is converted into diazonium salt by reaction with NaNo2/ HCL

diazonium

  • Then the diazonium salt is treated with water to form phenol.

diazonium

 

Final Answer:-

  • Aniline is converted into phenol by converting first into diazonium salt then this salt is treated with water to form phenol.

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