Question

25.3g of sodium carbonate is dissolved in enough water to make 250 ml of solution .if sodium carbonate dissociate completely ,what will be the molar concentration of sodium ion and carbonate ions .
proper explanation​

Answer 1

Molarity of sodium ion is = No. of moles of Sodium ion x  = 2 x 0.952 = 1.904 moles of  / Litre = 1.904 M

Molarity of Carbonate ion is = No. of moles of Carbonate ion x  = 1 x 0.952 = 0.952 moles of Carbonate ion / Litre = 0.952 M

 molar concentration Of sodium ion and carbonate ion are 1.904 M & 0.952 M respectively

Answer 2

molarity of solution =25.3×1000/106×250

=0.955M

Na2CO3--------> 2Na+CO2^3

(Na+)=2×0.955M

=1.910M

(CO3^-2)=0.955M