Calling Chem Teachers
Can anyone enlighten me on the aim or objective of the above laboratory experiment? I know I must've sketched the setup umpteen times, but this modest student scored a mediocre B3 for Combined Science (Biology/Chemistry) at O-Level (in 1990!), so...Labels: Education
sent to print @ 2:34 AM
5 Comments:
you will not get anything if you are just burning copper oxide (CuO) with normal air (cos CuO is oredi an oxidized compound) so my guess is this is a reduction experiment, ie hydrogen gas is channelled into the tube and burn tog with CuO to reduce CuO into Copper and water. Ie:
CuO + H2 --> Cu + H2O.
Thus you will observe water droplets formed in the tube and a green flame burning where the "excess gas burning" flame is. The green flame is characteristic of copper.
I think so ler... it's more than 14freaking years since I did A level chem!!! Brain rusted. Bleah. -_-
This is crazy! How can anyone remember it after so long?! You're not human! Even if you're not correct, it's still amazing you could come up with all that explanation! :-O
oho! my brain is used primarily for storing useless and pointless stuff, my only superhuman trait remember! Wish I can rem what I need to do this week instead arghs. :(
btw the bunsen burner is CLASSIC!!! so reminiscent of stuffy labs with wooden benches. Hate them chemistry experiments!!
Yeah! I've always marveled at your ability to remember "useless and pointless stuff". Haha. Indeed, the Bunsen burner was one of the most essential apparatus when it came to lab experiments; the retort stand was another.
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