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  • Assign reasons for the following (i)  is a stronger  reducing agent  than <img alt="H_{3}PO_{4}" src="https://entrancecorner.codec

Assign reasons for the following

(i) H_{3}PO_{2} is a stronger  reducing agent  than H_{3}PO_{4}.

(ii) Sulphur shows  more tendency  for catenation than oxygen .

(iii) Reducing character increases from HF to HI

 

 

 

 
 
 
 
 

Answers (1)

(i) H_{3}PO_{2} is a stronger reducing agent than H_{3}PO_{4} because in H_{3}PO_{2} ,two H- atoms are bonded directly to P- atom which reducing character whereas there is none in H_{3}PO_{4}.

                        

(ii) sulphur shows more tendency for catenation then oxygen due to big size of sulphur lone pair lone pair repulsions are less and S-S bond is stronger than O-O.

(iii) Reducing character increases from HF to HI since increase in the size of halogen, H-X Bond strength decreases which increases tendency to give H+.

HF < HCl < HBr < HI

Posted by

Sumit Saini

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