1.

What is equivalent mass of (NH2_4)_2Cr_2O_7in the change (NH_(4))_(2)Cr_(2)O_(7) rarr N_(2) + Cr_(2)O_3 + 4H_(2)O?

Answer»

`M/2`
`M/3`
`M/4`
`M/6`

Solution :`(NH_4)_(2)Cr_(2)O_7`
`2overset(-3)(NH_4^(+))rarroverset(0)(N_2)`
`2x +8 =+2 , 2x =-6 , E =M/6`


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