2007-06-18 18:57:09 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
You would have got a precipitate of yellow barium chromate, BaCrO4. You missed an "O" out of your formula!
2007-06-18 19:05:16 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋
Alright, like Gervald F mentioned, it's supposed to K2CrO4. There is no such thing as K2Cr4.
I will write out the chemical equation for your better understanding.
BaCl2(aq) + K2CrO4(aq) --> BaCrO4(s) + 2KCl(aq)
This kind of chemical reaction is known as double displacement.
As BaCrO4 is not soluble in water, therefore, it will become a solid or known as precipitate in the final solution. As (CrO4) 2- is yellow in colour when in ionic form, therefore, it will create a yellow precipitate with Ba 2+ (Ba 2+ in ionic form is white in colour) when both react together.
2007-06-19 03:03:06 · answer #2 · answered by Anonymous · 1⤊ 0⤋
absolutely nothing, since K2Cr4 does not exist.
if u use K2CrO4 though, a precipitate of BaCrO4 will be formed.
2007-06-19 02:13:30 · answer #3 · answered by chem_freak 5 · 0⤊ 0⤋