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Question

Two half reactions for the following equation are:
4H2SO4+K2Cr2O7+3Na2SO3Cr2(SO4)3+K2SO4+3Na2SO4+4H2O


A

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B

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C

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D

None of these

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Solution

The correct options are
A


B


K2Cr2O7+Na2SO3Cr+3+SO24

Now, Basic skeleton eq is:

Cr2O27+SO23Cr+3+SO24

Cr2O27Cr+3

SO23SO24


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