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[" 3.Which species is acting as a reduci...

[" 3.Which species is acting as a reducing agent in the "],[" following reaction? "],[qquad [14H^(*)+Cr_(2)O_(7)^(2-)+3Ni rarr2Cr^(3+)+7H_(2)O+3Ni^(2+)],[" (a) "Cr_(2)O_(7)^(2-)," (b) "Ni],[" (c) "H^(+)," (d) "H_(2)O]]

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