NCERT Class XI Chemistry Redox Reactions Solutions
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Question : 24
Total: 30
Refer to the periodic table given in your book and now answer the following questions:
(a) Select the possible non metals that can show disproportionation reaction.
(b) Select three metals that can show disproportionation reaction.
(a) Select the possible non metals that can show disproportionation reaction.
(b) Select three metals that can show disproportionation reaction.
Solution:
(a) The non-metals which show disproportionation reaction are N, P, S, Cl, Br and I.
(i)2 N O 2 ( a q ) + 2 O H ( a q ) – N O 2 – ( a q ) + N O 3 – ( a q ) + H 2 O ( l )
(ii)P 4 ( s ) + 3 O H ( a q ) – + 3 H 2 O ( l ) P H 3 ( g ) + 3 H 2 P O 2 – ( a q )
(iii)S 8 ( s ) + 12 O H ( a q ) – 4 S 2 – ( a q ) + 2 S 2 O 3 2 – ( a q ) + 6 H 2 O ( l )
(iv)C l 2 ( g ) + 2 O H ( a q ) – C l ( a q ) – + C l O ( a q ) – + H 2 O ( l )
Bromine and iodine give similar reactions as chlorine.
(b) The metals which undergo disproportionation reaction are :
C u + , G a + , I n +
(i)2 C u ( a q ) + C u ( a q ) 2 + + C u ( s )
(ii)3 G a ( a q ) + G a ( a q ) 3 + + 2 G a ( s )
(iii)3 I n ( a q ) + I n ( a q ) 3 + + 2 I n ( s )
(i)
(ii)
(iii)
(iv)
Bromine and iodine give similar reactions as chlorine.
(b) The metals which undergo disproportionation reaction are :
(i)
(ii)
(iii)
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