20 ml of 0.2M Al2(SO4)3 is mixed with 20ml of 6.6 M BaCl2 , the concertration of Cl- ion in solution is

1) 0.2

2) 6.6

3) 0.02

4) 0.06

The concentration of chloride ions will same as concentration of BaCl2 as chloride ions are present in this only.
Hence correct option is 2) 6.6M

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