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Ncert Solutions Chemistry Class 12th

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Ncert Solutions Chemistry Class 12th Class 12th

The structure of Neopren is

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Ncert Solutions Chemistry Class 12th Class 12th

Compound A used as a strong oxidizing agent is amphoteric in nature. It is the part of lead storage batteries. Compound A is

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Payal Gupta

Contributor-Level 10

PbO₂ is used is lead storage battery and is amphoteric as strong oxidizing agent since Pb (II) is more stable than Pb (IV).

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Ncert Solutions Chemistry Class 12th Class 12th

Find A, B and C in the following reactions:

NH₃ + A + CO₂ → (NH₄)₂ CO₃

(NH₄)₂ CO₃ + H₂O + B → NH₄ HCO₃

NH₄HCO₃ + NaCl → NH₄Cl + C

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Payal Gupta

Contributor-Level 10

$N H_{3} + \underset{A}{H_{2} O} + C O_{2} \to {(N H_{4})}_{2} C O_{3}$

${(N H_{4})}_{2} C O_{3} + H_{2} O + \underset{B}{C O_{2}} \to N H_{4} H C O_{3}$

$N H_{4} H C O_{3} + N a C l \to N H_{4} C l + \underset{C}{N a H C O_{3}}$

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Ncert Solutions Chemistry Class 12th Class 12th

Find A, B and C in the following reactions:

NH₃ + A + CO₂ → (NH₄)₂ CO₃

(NH₄)₂ CO₃ + H₂O + B → NH₄ HCO₃

NH₄HCO₃ + NaCl → NH₄Cl + C

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Ncert Solutions Chemistry Class 12th Class 12th

For the given reaction

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Payal Gupta

Contributor-Level 10

Refer to the image below

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Ncert Solutions Chemistry Class 12th Class 12th

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Payal Gupta

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Kindly refer to below image

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Ncert Solutions Chemistry Class 12th Class 12th

An amine on reaction with benzenesulphonyl chloride produces a compound insoluble in alkaline solution. This amine can be prepared by ammonolysis of ethyl chloride. The correct structure of amine is

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Payal Gupta

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Hinsberg test for amines

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Ncert Solutions Chemistry Class 12th Class 12th

Given below are two statements:

Statement I : A mixture of chloroform and aniline can be separated by simple distillation.

Statement II : When separating aniline from a mixture of aniline and water by steam distillation aniline boils below its boiling point.

In the light of the above statements, choose the most appropriate answer from the options given below:

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Payal Gupta

Contributor-Level 10

Boiling points of chloroform is 334 K and aniline is 457 K. Here difference in b. pt is more so they can be separated by simple distillation.

Aniline is insoluble (immiscible in water), the mixture of insoluble substance in water boils close to but below 373 K. so, aniline boils below its b.pt

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Ncert Solutions Chemistry Class 12th Class 12th

On treating a compound with warm dil. H₂SO₄, gas X is evolved which turns K₂Cr₂O₇ paper acidified with dil. H₂SO₄ to a green compound Y. X and Y respectively are

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Payal Gupta

Contributor-Level 10

$K_{2} C r_{2} O_{7} + H_{2} S O_{4} + \underset{G a s X}{S O_{2}} \to \underset{\begin{array}{l} G r e e n \\ Y \end{array}}{C r_{2} {(S O_{4})}_{3}} + K_{2} S O_{4} + H_{2} O$

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Ncert Solutions Chemistry Class 12th Class 12th

Hydrogen peroxide reacts with iodine in basic medium to give:

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alok kumar singh

Contributor-Level 10

Hydrogen peroxide reduces iodine to iodide ion is basic medium as;

$H_{2} O_{2} + 2 O H^{-} + l_{2} \to O_{2} + 2 l^{-} + 2 H_{2} O$

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