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Hydrogenation of Alkynes

44. CH3CCCH3+...

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44. CH3CCCH3+Pd/CaCO3+(CH3COO)2Pb=B,CH3CCCH3+Na in liq NH3=A,the minimum heat of hydragention in which between A and B?

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P

Q

R

.
The possible reagents are:

2 N a

N H_{3}

H_{2} / P d / C a C O_{3}

(quinoline)
(III)

2 H_{2} / P d / C

The correct statement with respect to the above conversion is(are):

Q. Which of following will react with

N a / l i q N H_{3}

?

Q. Find A, B and C in the following reactions

N H_{3} + A + C O_{2} \to (N H_{4}) C O_{3}

(N H_{4})_{2} C O_{3} + B \to C a C O_{3} ↓ + 2 N H_{4} C l

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

R_{1}

R_{2}

respectively in the given reaction:

C H_{3} - C H_{2} - C l R_{1} - \to A R_{2} - \to C H_{3} - C H_{3}

Q. Which of the following shows maximum solubility in Liq

N H_{3} ?

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