Balance the redox reaction by using Oxidation number method in acidic medium. 3 Cr2O7 2- (aq) + SO3 2- (aq) → Cr3+ (aq) + SO4 2- (aq)
Answers
Explanation:
10. The following informations are given in respect of Mrs. X. Compute
tax liability for Assessment year 2021-21 : Rs.
(i) (Per month salary) 90,000
(ii)
(Interest on Bank deposit (Savings Bank A/C))12,000
(iii)
(Dividend received from units of U.T.I.)10,000
(iv)
(Received share from the income of H.U.I.)7,000
(v) (Examinership remeneration received)6,000
(vi) (Deposited in Public provident fund in P.Y.)12,000
(vii) (Income from business) 1,60,000
Answer:
The oxidation half reaction is SO2(g)+2H2O(l)→SO42−+4H+(aq)+2e−.
The reduction half reaction is Cr2O72−(aq)+14H+(aq)+6e−→2Cr3+(aq)+7H2O(l).
The oxidation half reaction is multiplied by 3 and added to the reduction half reaction to obtain the balanced redox reaction.
Cr2O72−+3SO2(g)+2H+(aq)→2Cr3+(aq)+3SO42−(aq)+H2O(l)
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