Question

Quite a long one, but I need to know the formulas and the solutions.

Answer 1

a) Concentration of sodium carbonate

Concentration (M) = # mol/ vol (L)

List known data

# mol: 0.50 mol Na2CO3

Vol: 1.0 dm3

List unknown data

M

Converting dm3 into L

`L=1.0dm^3\cdot(1L)/(1.0dm_3)=1.0L`

Molarity

`M=(0.50molNa_2CO_3)/(1.0L)=0.50molNa_2CO_3_{}`

The molarity of Na2CO3 is 0.50 M