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Four organic liquids are used in an experiment - HSC - SSCE Chemistry - Question 21 - 2021 - Paper 1
Question 21
Four organic liquids are used in an experiment. The four liquids are - hexane - hex-1-ene - propan-1-ol - propanoic acid. (a) State ONE safety concern associated wi... show full transcript
Worked Solution & Example Answer:Four organic liquids are used in an experiment - HSC - SSCE Chemistry - Question 21 - 2021 - Paper 1
Step 1
State ONE safety concern associated with organic liquids and suggest ONE way to address this safety concern.
Answer
A major safety concern associated with organic liquids is their flammability. To address this concern, it is crucial to store the liquids in a cool, well-ventilated area away from any ignition sources.
Step 2
Step 3
What chemical test, other than those used in part (b), could be used to confirm the identification of ONE of the liquids? Include the expected observation in your answer.
Answer
Liquid: propanoic acid
To confirm the identification of propanoic acid, add a small amount of solid sodium hydrogen carbonate to the liquid. The expected observation is the production of bubbles of gas, indicating the presence of propanoic acid.