25cm³ of a solution contains 1.06g of anhydrous Na²Co³ in 200cm³ solution requires and 20cm³ of an aqueous solution of H²So⁴.

Question

a.what is the concentration of acid solution in mol/dm³? (Na=23,C=12,O=16)
b.calculate the mass conc
c.molar conc
Show your workings solvings

Answer 1

a. The concentration of the acid solution in mol/dm³ is calculated using the formula:

Molarity = (moles of solute / volume of solution)

Molarity = (1.06g / (23 + 12 + 16) g/mol) / (200 cm³ + 20 cm³) dm³

Molarity = 0.0014 mol/dm³

b. The mass concentration of the acid solution is calculated using the formula:

Mass concentration = (mass of solute / volume of solution)

Mass concentration = (1.06g / (200 cm³ + 20 cm³)) g/dm³

Mass concentration = 0.0053 g/dm³

c. The molar concentration of the acid solution is calculated using the formula:

Molar concentration = (moles of solute / volume of solution)

Molar concentration = (1.06g / (23 + 12 + 16) g/mol) / (200 cm³ + 20 cm³) dm³

Molar concentration = 0.0014 mol/dm³