Indentifying unknown substances..

[lachie123]

Hi guys..I have got a lab test tomorow at school, in which I will have to indentify 10 unknown solutions. I know that they are
Ammonia solution
Chromium chloride
copper(II)nitrate
Copper(II)sulfate
Ferric (Iron III) chloride
Lead(II) nitrate.
Magnesium sulfate.
Potassium permanganate
Sodium carbonate.
sodium dichromate.
My job is to find which one is which
I have to do this using only
HCL(aq)
and barium nitrate as test solutions
as well as any odour and colour.
Iam to use Odour and colour to indentify first then use the test solutions to indentify the rest...
Despite Rereading my text books thoroughly ,searching though extra books i borrowed from the libary and much "googling"
All i know is that the ammonia willl have a pungent odour
CuNO3 and CuSO4 will be blue.
feCl3 will be a yellow(urine like ) colour.
and i think the chromium chloride will be dark green .


So does anybody have any ideas of how i can tell the others apart and to distingwish betwwen those substances of a similar colour..

thank you in advance.
please respond as soon as possible as this will help immensly.

thankyou..

[lachie123]

okey ive worked out all the rest except for
magnesium sulfate
sodium carbonate
lead(II) nitrate
these are all clear and iam not realy sure how to tell them apart
i think if i had HCl to sodium carbonate it will bubble CO2 out.
is this correct
but i still cant tell the other two.
please responed someone ,its 1am my time and uve gota stay up till 1am figure this out.

[Borek]

Originally Posted by lachie123

i think if i had HCl to sodium carbonate it will bubble CO2 out.

Correct.

Check out solublity of PbCl2 and PbSO4.