What is the Na+ ion concentration in the solution formed by mixing 20. mL of 0.10 M Na2SO4 solution with 50. mL of 0.30 M Na3PO4 solution?

`Na_2SO_4 rarr
2Na^++SO_4^(2-)`

`Na_3PO_4 rarr 3Na^++PO_4^(3-)`

 

Mole ratio

`Na_2SO_4:Na^+ = 1:2`

`Na_3PO_4:Na^+ = 1:3`

 

Amount of `Na_2SO_4`
used `= 0.1/1000xx20`

Amount of `Na^+` from `Na_2SO_4 =...