What a gas

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Offline Make it Lady

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What a gas
« on: 15/10/2008 20:27:39 »
A school near Swindon had to be evacuated and two children were taked to hospital with breathing problems after an experiment to make sulphur dioxide went wrong.
What could possibly go wrong?????
Give a man a fire and he is warm for a day, set a man on fire and he is warm for the rest of his life.

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blakestyger

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What a gas
« Reply #1 on: 15/10/2008 22:18:46 »
Do they still use Kipp's apparatus? They always seemed pretty reliable - perhaps the fume cupboard fan failed; that would cause a scatter. [xx(]

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Offline JimBob

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What a gas
« Reply #2 on: 15/10/2008 23:51:45 »
Someone cut a fart.
The mind is like a parachute. It works best when open.  -- A. Einstein

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Offline Ray hinton

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What a gas
« Reply #3 on: 16/10/2008 00:20:48 »
http://www.swindonadvertiser.co.uk/news/3760124.Chemical_accident_at_Ridgeway_School/

its a local school in south swindon, probably "litigation panic" setting in !
its the drugs,y-know.

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Offline turnipsock

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What a gas
« Reply #4 on: 16/10/2008 01:05:49 »
Bunsen burning back
Beeswax: Natures petrol tank sealant.

When things are in 3D, is it always the same three dimensions?

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Offline Make it Lady

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What a gas
« Reply #5 on: 16/10/2008 17:21:54 »
The back of what?
Give a man a fire and he is warm for a day, set a man on fire and he is warm for the rest of his life.

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Offline Bored chemist

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What a gas
« Reply #6 on: 16/10/2008 19:37:35 »
Barely informed speculation alert.

Copper forms two oxides.

There is a common school laboratory experiment where CuO is dissolved in sulphuric acid to give copper sulphate. Black powder + clear liquid gives blue liquid. If you like, you can evaporate off some of the water and get pretty blue cystals.
All nice and safe and pretty.

Repeating the experiment with Cu2O (the other copper oxide) would initially give copper sulphate and a suspension of powdered copper.
No great harm there.
Heating copper with (moderately concentrated) sulphuric acid generates sulphur dioxide which is stinky, poisonous and provokes asthma in some people.
Oops.

Please disregard all previous signatures.

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Offline Make it Lady

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What a gas
« Reply #7 on: 16/10/2008 19:45:38 »
But why would an experiment done thousands of times suddenly produce enough gas to clear several science labs? Surely they were using a fume cupboard if an asthma inducing gas is about to be produced. I have to produce a risk assessment just for lighting a candle or launching a water rocket.
Give a man a fire and he is warm for a day, set a man on fire and he is warm for the rest of his life.