H-V-Z reaction involves the use of P and Cl2CH3 CH2 COOH CH3 CHClCOOH The function of phosphorus is

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Standard XII

Chemistry

Nucleophilic Substitution

H.V.Z reactio...

Question

H.V.Z reaction involves the use of P and $C l_{2}$
$C H_{3} C H_{2} C O O H P, C l_{2} - -- \to C H_{3} C H C l C O O H$ The function of phosphorus is

As a catalyst

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In the formation of $P C l_{3}$ which carries out halogenation at the $α$ - carbon atom

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In the formation of $P C l_{3}$ which converts - COOH into - COCl.

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None of the three

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Solution

The correct option is C
In the formation of $P C l_{3}$ which converts - COOH into - COCl.

Phosphorus converts a little of the acid into acid chloride which is more reactive than the parent carboxylic acid. Thus is the acid chloride. not the acid itself, that undergoes chlorination on the $α$ - carbon.

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H.V.Z reaction involves the use of P and $C l_{2}$
$C H_{3} C H_{2} C O O H P, C l_{2} - -- \to C H_{3} C H C l C O O H$ The function of phosphorus is

9.3 g of phosphorous was used in the reaction shown.

P + 5 H N O_{3} ⟶ H_{3} P O_{4} + H_{2} O + 5 N O_{2}

Calculate the number of moles of phosphorus taken.

Q. Concentrate nitric acid oxidises phosphorus to phosphoric acid according to the following equation:

P + 5 H N O_{3} (c o n c .) \to H_{3} P O_{4} + H_{2} O + 5 N O_{2}

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of phosphorus was used in the reaction, calculate:
The mass of phosphoric acid formed.

Q. Concentrate nitric acid oxidises phosphorus to phosphoric acid according to the following equation:

P + 5 H N O_{3} (c o n c .) \to H_{3} P O_{4} + H_{2} O + 5 N O_{2}

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of phosphorus was used in the reaction, calculate:
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S T P

[H = 1, N = 14, P = 31, O = 16]

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H.V.Z reaction involves the use of P and Cl2 CH3CH2COOHP,Cl2−−−→CH3CHClCOOH The function of phosphorus is

The correct option is C In the formation of PCl3 which converts - COOH into - COCl. Phosphorus converts a little of the acid into acid chloride which is more reactive than the parent carboxylic acid. Thus is the acid chloride. not the acid itself, that undergoes chlorination on the α - carbon.

H.V.Z reaction involves the use of P and $C l_{2}$
$C H_{3} C H_{2} C O O H P, C l_{2} - -- \to C H_{3} C H C l C O O H$ The function of phosphorus is