The number of electrons involve in the equation C r O 4 2 - → C r 2 O 7 2 - is x . Then value of x is equal to

Question

The number of electrons involve in the equation C r O 4 2 - → C r 2 O 7 2 - is x . Then value of x is equal to, 0, 1, 3, 5

MARKS App · Accepted Answer

C * r O 4 2 - C * r 2 O 7 2 - x + [ ( - 2 ) × 4 ] = - 2 2 x + ( - 2 ) × 7 = - 2 x = 8 - 2 = + 6 2 x = 14 - 2 = 12 , x = 12 2 = + 6 In this reaction oxidation and reduction are not involved because there is no change in oxidation number.

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