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Complete and balance the following equations: a) H+ + Cr2O7^2– + Br– → 2Cr^3+ + ? + ?

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Complete and balance the following equations: 

(a) H+ + Cr2O7 2– + Br– → 2Cr3+ + ? + ? 

(b) H2O2 + Cl– → OH– + ? 

(c) Zn + Cu2+ → Zn2+ + ? 

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1 Answer

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(a) 14H+ + Cr2O72– + 6Br– → 2Cr3+ + 3Br2 + 7H2O 

(b) H2O2 + 2Cl– → 2OH– + Cl2 

(c) Zn + Cu2+ → Zn2+ + Cu.

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