i was given an unknown sulphate solution and HCL was added to itm after which BaCL2 was added. why was the HCL added to the sulphate?
2006-07-08 18:41:29 · 3 answers · asked by hello f 2 in Science & Mathematics ➔ Chemistry
also, why can't i just add the BaCL2 with the sulphate solution?
2006-07-08 18:45:16 · update #1
I was given a sulphate solution, HCL and BaCL2 to make BaSO4. I had to had the HCL to the sulphate solutoin, then heat it to boiling, afterwhich the BaCL2 was added. My question is why was the HCL added? and why can't add the BaCL2 straight to the sulphate solution?
2006-07-08 19:02:48 · update #2
could you repeat that, I am having trouble following your question?
2006-07-08 18:45:46 · answer #1 · answered by Richardicus 3 · 0⤊ 0⤋
The precipitation of barium sulphate is increased by adding hydrochloric acid and then barium chloride. This is due to the common ionic effect (The common ion effect of chloride ions enhances the precipitation of sulphate.)
2006-07-09 10:05:45 · answer #2 · answered by bindu k 2 · 0⤊ 0⤋
because you would get all sorts of ppt the way you want to do it. adding acid helps keep stuff soluble. write out the reactions and review solubility rules
2006-07-14 11:38:10 · answer #3 · answered by shiara_blade 6 · 0⤊ 0⤋