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(a) Among the hydrides of group 16, write the hydride

(i) Which is a strong reducing agent.

(ii) Which has maximum bond angle.

(iii) Which is most thermally stable.

Give suitable reason in each.

(b) Complete the following equations :

        S+\underset{(Conc.)}{H_{2}SO_{4}}\rightarrow

         Cl_{2}+\underset{(Cold \; and \; dilute)}{NaOH}\rightarrow

 

 

 
 
 
 
 

Answers (1)

(a)

(i) H2Te is a strong reducing agent because of low bond dissociation enthalpy

(ii) H2O has maximum bond angle, because of small size and high electronegativity of oxygen, bond pair–bond pair repulsion is more.

(iii) H2O is most thermally stable, because of high bond dissociation enthalpy.

(b) S + 2H2SO4 \rightarrow 3SO2 + 2H2O

      Cl2 + NaOH \rightarrow NaCl + NaOCl + H2O

 

Posted by

Safeer PP

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