Answer to Question #158120 in General Chemistry for Emmanuel Israel

Question

Calculate the concentrations in g dm-3 of the ions in the following solutions:

a.chlorine ion in 0.3M sodium chloride solution

b.NO3 ions in 0.75M trioxonitrate (v) acid

c.SO3 ions in 3M potassium tetraoxosulphate (iv) solution

Answer 1

a. T(Cl^-)=m(Cl^-)/V(solution)

m(Cl^-)=n*M=0.3*35.5=10.65 g

So

T=10.65/V; g/dm³

b. T(NO3^-)=m(NO3^-)/V(solution)

m(Cl^-)=n*M=0.75*62=46.5 g

So

T=46.5/V; g/dm³

c. T(SO₃^2-)=m(SO₃^2-)/V(solution)

m(SO3^-)=n*M=3*80=240 g

So

T=240/V; g/dm³

It is not enough data to solve this exercise. I mean the volume of solutions.