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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
One safety concern associated with organic liquids is their flammability. To address this safety concern, it is important to handle these liquids in a well-ventilated area and to keep them away from open flames or sparks.
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 organic liquid. The expected observation is the production of bubbles of gas, indicating the presence of propanoic acid.