reactions: warm flask

[pHysiX]

hello again!

we did our prac for preparing aspirin and it was noted that the flask was very warm/hot when we were swirling the flask (contained salicylic acid and acetic anhydride as well as sulfuric acid).

Can someone please provide me an explanation please?

Thanks heaps in advance!

[Mao]

I'm assuming you used conc sulfuric acid? When conc sulfuric acid mixes with water, heat is released (dissolving of sulfuric acid releases heat, as the first ionisation fully occurs)

[/0]

haha that's like the exact same prac i just did

We used ice water

oh yeah

[pHysiX]

hi5

thanks mao.

to /0 haha, yea we did as well. i remember breaking the ice for the experiment...my teacher said i could do it, and i warned her that i'd make it very loud. she still let me and wen i smashed the ice, every class came in to ask what happened >.<...gotta love chem

thanks again guys

[TrueTears]

My friend thought that the prac he did today was just a practise prac but it was actually for a SAC so he spent the whole lesson pouring sulfuric acid on an ant.

[kurrymuncher]

My friend thought that the prac he did today was just a practise prac but it was actually for a SAC so he spent the whole lesson pouring sulfuric acid on an ant.

LOL

[pHysiX]

My friend thought that the prac he did today was just a practise prac but it was actually for a SAC so he spent the whole lesson pouring sulfuric acid on an ant.

haha! nice!

we had a cockroach and my friend was going to pour concentrated sulfuric acid onto it...but our teacher made us through it outside and so we spent like 2 minutes watching it do backstroke in a puddle...

we had pyjama day that day and it was raining...one hectic chem class xD