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  • (a) Give one example to show the anomalous reaction of fluorine.  (b) What is the structural difference between white phosphorus and red phosphorus? (c) What happens when <img alt="XeF_6" src="https://entrancecorner.codeco

(a) Give one example to show the anomalous reaction of fluorine. 

(b) What is the structural difference between white phosphorus and red phosphorus?

(c) What happens when XeF_6 reacts with NaF?

(d) Why is H_2S a better reducing agent than H_2O ?

(e) Arrange the following acids in the increasing order of their acidic character : 

HF,HCl,HBr and HI

 

 

 

 
 
 
 
 

Answers (1)

(a)

2F_2(g)+2HO(l)\rightarrow 4H^+(aq)+4F^-(aq)+O_2(g)

X_2(g)+H_2O(l)\rightarrow \rightarrow H\times(aq)+HO\times(aq)

Fluorine oxidises water to oxygen whereas Chlorine and Bromine react with water to form corresponding hydrohalic and hypohalous acids. 

(b)

 

It consists of discrete It is polymeric, consisting of chain of P4 tetrathedral tetrahedral P4 molecule  linked together

 

(c) 

XeF_6+NaF\rightarrow Na^+[XeF_7]^-

(d)

In H_2O, bond dissociation enthalpy of O-H is more than S-H bond of H_2S, is better reducing agent than H_2O.

(e)

 HI>HBr>HCl>HF

Posted by

Sumit Saini

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