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Question

In acidic medium dichromate ion oxidises stannous ion as:

xSn2++yCr2O27+zH+aSn4++bCr3++cH2O

A
The value of x : y is 1 : 3
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B
The value of x + y + z is 18
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C
a : b is 3 : 2
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D
The value of z – c is 7
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Solution

The correct options are
B The value of x + y + z is 18
C a : b is 3 : 2
D The value of z – c is 7
xSn2++yCr2O27+zH+aSn4++bCr3++cH2O

Upon balancing the redox-reaction

3Sn2++Cr2O27+14H+3Sn4++2Cr3++7H2O

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