My prac method has an extra step that i dont see the point of (barium chloride was used to precipitate sulphate ions instead of barium carbonate). The step is just before precipitate is weighed:
Collect the last drops of filtrate in a 100 mL beaker and test for the presence of chloride ions by...
Fantastic! :D
But how does the HCl increase the crystal size of the precipitate?
Why is the solution heated, and why is heat important for the precipitate to coagulate?
I have another step in my prac method:
Collect the last drops of filtrate in a 100 mL beaker and test for the presence of...