In the chemical reaction, K2 Cr2 O7 + xH...

In the chemical reaction, `K_2 Cr_2 O_7 + xH_2 SO_4 + ySO_2 rarr K_2SO_4 + Cr_2(SO_4)_3 + zH_2O,` the value of `x,y and z` respectively are :

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The correct Answer is:

7

The balanced equation is
`K_2 Cr_2 O_7 + 7H_2SO_4 + 6KI to 4K_2SO_4 + Cr_2 (SO_4)_3 + 3I_2 + 7H_2O`

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