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State with balanced equations , what hap...

State with balanced equations , what happens when .

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Nitrogen gas is evolved .
`( NH_4)_2 Cr_2SO_4 overset (Delta ) (rarr) Ag_2SO_4 uarr + 4H _2O`
b. Sulphur dioxde ggas is evolved .
`2 A g + 2 H_2SO_4 overset (Delta) (rarr) Ag_2SO-4 +SO_4uar +2HO`.
c. Pink colur of acidifed potassium permangante is dischared .
`5 H_2 S + 2 K MnO_4 + 3 H_2 SO_4 rarr K_2 SO_4 + MnSO_4 + 5S + 8H_2O`
`(MnO_4^(Θ) rarr Mn^(2+) , S^(2-) rarr S)`
d. Meta stannic acid is formed .
`Sn + 4 H NO _3 rarr H_2 SnO_3 4NO_2 + H_2O`
` NO_3^(Θ) rarr NO_2, Sn rarr Sn^(2+)`.
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