400 ml 0.1 M `BaCL_(2)` is mixed with 600 ml 0.1 M `H_(2)SO_(4)` to form products according to following reaction:
`BaCl_(2) + H_(2)SO_(4) rarr BaSO_(4) + 2HCl`
Select the correct option(s) after reaction is completed.

Options

A. Molarity of `Ba^(+2)` ions in final solution is 0.04 M
B. Molarity of `SO_(4)^(2-)` ions in solution is 0.02 M
C. Molarity of `H^(+)` ions do not change on mixing
D. Final molarity of `H^(+)` ions in solution is 0.12 M

Answer

B, D