Question #9350311

# chem - correct me if i am wrong?

**15) The solution of sodium sulfate has concentration 60 mmol.dmâ€“3 . What is the concentration of
sodium ions in the solution?
a) 60 mmol/l b) 20 mmol/l c) 120 mmol/l d) 180 mmol/l
e) no answer is correct
balanced equation
na2so4 --> 2na2+ so42-
therefore mol ratio
is 1:2
so 60 mmol.dm-3 x 2= 120mmol/l
so the answer is c)???
**

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