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Equivalent mass of HCI in the given reac...

Equivalent mass of HCI in the given reaction `K_2Cr_2O_7 rarr 2CrCl_3+2KCL+3Cl_2+7H_2O` (M is molar mass of HCl)

A

`M/6`

B

`3M/7`

C

`7M/3`

D

M

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