I found an old chemistry set at an antique store, so I brought it home and started fiddling around with it. Many containers were unlabeled, and I want to figure out what they are. If you need more info, or would like me to run a test on one of them, tell me and I shall add more detail.
1. It was liquid, blue, had almost no odor, and reacted with bromine to form a yellow liquid.
2. This one was labeled Sol. NaOH, only there was a solid white precipitate, and the liquid did not appear saturated. It was clear, until I opened it, and it rapidly changed to pink.
3. A blueish solid that dissolved in water to form a pink solution. Did not burn in either form.
I can at least try whatever analysis you suggest. This is an old chemistry set, many of the labeled chemicals are now hard to find in stores.
1. It was liquid, blue, had almost no odor, and reacted with bromine to form a yellow liquid.
2. This one was labeled Sol. NaOH, only there was a solid white precipitate, and the liquid did not appear saturated. It was clear, until I opened it, and it rapidly changed to pink.
3. A blueish solid that dissolved in water to form a pink solution. Did not burn in either form.
I can at least try whatever analysis you suggest. This is an old chemistry set, many of the labeled chemicals are now hard to find in stores.
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1) reacted with bromine?!?! i highly doubt it was bromine that formed the yellow liquid, otherwise you wouldnt be here to tell us about. anyways, it's probably a solution with some metal ions. my first guess would be copper sulfate. there are a couple of ways to determine the most common ions, i'm sure you find something on the internet
2) Sol. NaOH = this one should be rather obvious. the solid white precipitate was probably the NaOH from a formerly saturated solution. the reason it turned pink in contect to air can only mean it had something else in solution. i would separe the solution and the precipitate, see if the precipitate is easily soluble in water and check the pH
3)if it didnt burn it's cuz it was a salt, if the solution didnt burn it's cuz water is quite hard to ignite. anyways this solid could be KMnO4, this form a pink solution and in solid form it can appear blueish/greyish. to test this hypothesis, simply put some of the solution (not too concentrated) in a dish and then put a gummibear in it. if its KMnO4 the solution will turn from pink, to green and finally brown.
well, if you want to know my honest opinion, you kinda wasted your money. i'm sure it all looks old and fancy but without labels it's almost no use. of course it can be like a hobby to find out what everything exactly is but without the proper analytical techniques and reagents it could be almost impossible. and if you manage to find out what it is, you still cant use it cuz you dont know the purity. all in all your old chemistry set is a quite serious danger
but if you're up to the task and need advice, you can ask me
2) Sol. NaOH = this one should be rather obvious. the solid white precipitate was probably the NaOH from a formerly saturated solution. the reason it turned pink in contect to air can only mean it had something else in solution. i would separe the solution and the precipitate, see if the precipitate is easily soluble in water and check the pH
3)if it didnt burn it's cuz it was a salt, if the solution didnt burn it's cuz water is quite hard to ignite. anyways this solid could be KMnO4, this form a pink solution and in solid form it can appear blueish/greyish. to test this hypothesis, simply put some of the solution (not too concentrated) in a dish and then put a gummibear in it. if its KMnO4 the solution will turn from pink, to green and finally brown.
well, if you want to know my honest opinion, you kinda wasted your money. i'm sure it all looks old and fancy but without labels it's almost no use. of course it can be like a hobby to find out what everything exactly is but without the proper analytical techniques and reagents it could be almost impossible. and if you manage to find out what it is, you still cant use it cuz you dont know the purity. all in all your old chemistry set is a quite serious danger
but if you're up to the task and need advice, you can ask me