Which one of the following aqueous solution will have the lowest freezing point?

Options

A. `0.2 M Na_(2)SO_(4)`
B. `0.1 M "Urea"`
C. `0.2 M NaNO_(3)`
D. `0.1 M BaCI_(2)`

Answer

A

Explanation

Both (a) and (b) gives three moles of ions but molarity of (a) is more hence it has highest depression in freezing point, shows lowest freezingg point .