Reaction?

[m@tty]

What products come from the reaction of: , and ?

Thanks

[Edmund]

Am I right? 

[m@tty]

I don't know.

The only useful information was that was added to precipitate sulfate. ie. is a product.
I couldn't figure out what was going to happen with aluminium, that's why I asked.

EDIT:
The answers didn't give the equation, this is for gravimetric analysis, so they just gave the mass of the precipitate.

The full question was:
0.500 g of dissolved in water
0.500 g of dissolved in water
excess added

What is the mass of the precipitate, . The answer is 1.85g

[Edmund]

Hmm... Aluminium chloride is insoluble

[chem-nerd]

n(BaSO₄) = n(SO₄^2-) = n(Na₂SO₄) + 3 x n(Al₂(SO₄)₃)

It's the BaSO₄ that will form a precipitate and the rest of the reactants will remain in solution.

[cindyy]

you would have 2 equations, one is sodium sulfate + barium chloride, and the other is aluminium sulfate + barium chloride.  Both reactions would give you a barium sulfate precipitate.  And then you would needa find the mass of each of the barium sulfates in both the reactions and add them together, that should give you 1.85 g!

[Studyinghard]

An easy method is ...

a) get mole of Na₂SO₄ and so that is the mole of SO₄^2-

b) get mole of (Al₂(SO₄)₃) and multiply that times 3 because there are 3 sulfate ions to get the mole of sulfate in this compound.

then you add the number of mole in a) and b) and that is the mole of SO₄^2-

That is then the mole of BaSO₄ because of the 1:1 to ratio.

then with the mole you figure out the mass of BaSO₄

[chem-nerd]

^^ that's exactly what I did here

n(BaSO₄) = n(SO₄^2-) = n(Na₂SO₄) + 3 x n(Al₂(SO₄)₃)

It's the BaSO₄ that will form a precipitate and the rest of the reactants will remain in solution.

[Studyinghard]

^^ that's exactly what I did here

n(BaSO₄) = n(SO₄^2-) = n(Na₂SO₄) + 3 x n(Al₂(SO₄)₃)

It's the BaSO₄ that will form a precipitate and the rest of the reactants will remain in solution.

]
oh my bad ... as soon as i saw an equation i didnt read the post

[simonhu81292]

Hmm... Aluminium chloride is insoluble

hey edmund... isn't it only silver chloride and lead chloride aren't soluble ...
so aluminium chloride is also insoluble ... ? 

[Edmund]

Hmm... Aluminium chloride is insoluble

hey edmund... isn't it only silver chloride and lead chloride aren't soluble ...
so aluminium chloride is also insoluble ... ? 

Oh yeah I looked it up wrongly, Ag and not Al

[simonhu81292]

lol...
yeah ..matty ..
the answer is right if you follow chem-nerd's way !! ...just checked

 :smitten: