Which of the following is correct representation of a given molecular equation in ionic…

Chemistry · Class 11 · CBSERedox Reactions

Which of the following is correct representation of a given molecular equation in ionic form?
K2Cr2O7 + 7H2SO4 + 6FeSO4 3Fe2(SO4)3 + Cr2(SO4)3 + K2SO4 + 7H2O
  1. Cr2O7 2– + 14H+ + 6Fe2+ 6Fe3+ + 2Cr3+ + 7H2O
  2. 2K+ + Cr2O7 2– + 7SO4 2– + 6Fe2+ 3Fe3+ + SO4 2– + Cr3+ + K+ + 7H2O
  3. Cr2O7 2– + 2K+ + 7H+ + 6Fe2+ 6Fe3+ + 6Cr3+ + K+
  4. Cr2O7 2– + 7H+ + 6Fe2+ 3Fe2+ + 2Cr3+ + 2K+ + 7H2O

Answer

(A) Cr 2 O 7 2– + 14H + + 6Fe 2+ → 6Fe 3+ + 2Cr 3+ + 7H 2 O

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