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(a) Why does PCl3 fume in moisture ? (...

(a) Why does `PCl_3` fume in moisture ?
(b) Are all the five bonds in `PCl_5` molecule equivalent ? Justify your answer.
( c) How do you account for the reducing behavior of `H_3 PO_2` on the basis of its structure ?
(d) Give the disproportional reaction of `H_3PO_3`.

Text Solution

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The two H atoms bonded directly to phosphorous atom impart reducing characters .
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(a) Why does PCl_3 fume in moisture ? (b) Are all the five bonds in PCl_5 molecule equivalent ? Justify your answer. ( c) How do you account for the reducing behaviour of H_3 PO_2 on the basic of its structure ? (d) Give the disproportional reaction of H_3PO_3 .

How do you account for reducing behaviour of H_(3)PO_(2) on the basis of its structure?

In PCl_(5) phosphorus is in sp^(3) d hybridised state but all its five bonds are not equivalent. Justify your answer with reason.

Why does H_3PO_3 act as a reducing agent but H_3PO_4 does not?

How many hydrogen bonds are formed by each H_3 PO_4 molecule ?

How many equivalence relation on the set {1,2,3} containing (1,2) and (2,1) are there in all ? Justify your answer.

(a) (i) Why PCl_(5) gives fumes in moisture ? (ii) Why Interhalogens are more reactive than pure halogens ? (b) Draw the structures of the following : {:((i) PCl_(5), (ii)H_(2)S_(2)O_(8),(iii)XeF_(4)):}

(a) Account for the following : (i) PCl_(5) is more covalent than PCl_(3) . (ii) Iron on reaction with HCl forms FeCl_(2) and not FeCl_(3) . (b) Draw sturcture of XeO_(3) .

Which of the following statements are correct ? (a) All the three N___O bond lengths in HNO_(3) are equal. (b) All P___Cl bond lengths in PCl_(5) molecule in gaseous state are equal (c ) P_(4) molecule in white phosphrus have angular strain therefore white phosphorus is very reactive (d) PCl_(5) is ionic in solid state in which cation is tetrahedral and anion is octahedral . And anion is octahedral.

Assertion : H_(3)PO_(2) has strong reducing property but H_(3)PO_(4) does not. Reason : P-OH bond present in H_(3)PO_(4) .