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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 $XeF_6$ 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)

best_answer

(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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