Sunday, 24 February 2013

09 Test for Gases

01 Test for Carbon Dioxide Gas



Expected Observation: Effervescence observed. A colourless and odorless gas evolved produced white precipitate in limewater. (No writing of chalky or milky or white suspension!!!) 

02 Test for Ammonia Gas 


Expected Observation: Effervescence observed. A colourless and pungent gas evolved turn damp red litmus paper blue.

03 Test for Oxygen Gas 


Expected Observation: A colourless and odorless gas evolved relights a glowing splint.

04 Test for Hydrogen Gas 



Expected Observation: Effervescence observed. A colourless and odorless gas evolved extinguishes lighted splint with a 'pop' sound.




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