Why ca(no3)2 compound imparts red color to the flame and decompose on heating to give oxygen and a brown gas?
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2Ca(NO3)2→2CaO + 4NO2 + O2
NO2 is a brown gas. Ca2+ imparts brick red colour to the flame.
Since the magnesium or its compound does not give flame test, it must be a compound of calcium. Also the gas evolved is brown coloured shows that it is the oxide of nitrogen. All these inference indicates towards the compound calcium nitrate.
NO2 is a brown gas. Ca2+ imparts brick red colour to the flame.
Since the magnesium or its compound does not give flame test, it must be a compound of calcium. Also the gas evolved is brown coloured shows that it is the oxide of nitrogen. All these inference indicates towards the compound calcium nitrate.
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