-Place 2cm3 of sample solution in clean test tubev
-Add sodium hydroxide solution v
-Shake mixture v
-Add a piece of aluminium foil to miturev
-Heatv
-Dip litmus papers on distilled waterv
-Place them on the mouth of test tube heating(testing gas produce) v
-Make observations v
Observations:
#Effervescence/fizzling,bubble
#Colourless pungent gas
#Blue litmus paper remain blue
#Red litmus turns blue
Inference:
Nitrate ions present
Explanation:
When nitrate sample solution is added to sodium hydroxide and aluminum foil, ammonia gas is produce as bubbles and confirmatory of NO3
Kipssben answered the question on August 22, 2018 at 09:56
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