Ammonium dichromate on heating givesA. `CrO_(3)`B. `Cr_(2)O_(3)`C. CrO

1.	Ammonium dichromate on heating givesA. `CrO_(3)`B. `Cr_(2)O_(3)`C. CrOD. `CrO_(2)`
Answer» Correct Answer - B Ammonium dichromate, dichromate, `(NH_(4))_(2)Cr_(2)O_(7)`, is often used in 'volcano' demonstrations. If a red - hot wire or a lit match is touched to a pile of ammonium dichromate exothermic decomposition is intiated, emitting sparks and water vapor in a spectacular way. However, this is not a safe demonstration because a dust containing carcinogenic chromium `(+6)` copounds is usually relesed. The reaction is nonstoichlimetric, producing chromium (III) oxide, water vapor, nitrogen gas, and some ammonia gas. It is commonly represented as `(NH_(4))_(2) Cr_(2)O_(7)(s)` `overset (Delta) rarr` `Cr_(2)O_(3)(s) + N_(2)(g) + 4H_(2)(s)`

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Ammonium dichromate on heating givesA. `CrO_(3)`B. `Cr_(2)O_(3)`C. CrOD. `CrO_(2)`

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