Burning magnesium continues to burn in n...

Burning magnesium continues to burn in nitric oxide, while burning sulphur is extinguised. Give reason.

Text Solution

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The reaction between magnesium and oxygen is highly exothermic, i.e. the heat evolved is enough to decompose `NO` into `N_2` and `O_2`, while the heat envolved during sulphur is not sufficient to decompose `NO`. Hence, buring `Mg` continues to burn in `NO`, but burning `S` is extinguished.

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Knowledge Check

Magnesium keeps on burning in

A

`N_2`

B

`CO_2`

C

`N_2O`

D

`N_2` as well as `CO_2`

Magnesium burns to form

A

Calcium carbonate

B

Magnesium oxide

C

Calcium oxide

D

Magnesium sulphate

Mg burns in air to give

A

`Mg_(3)N_(2)`

B

`MgO`

C

`MgO and Mg_(3)N_(2)`

D

`MgCO_3`

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