25cm³ of a solution contains 1.06g of anhydrous Na²Co³ in 200cm³solution requires 20cm³ of an aqueous solution of H²So⁴.what is the concentration of acid solution in mol/dm³?(Na=23,C=12,O=16)
Calculate the molar conc and mass conc
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Molar concentration = 1.06g/ (23 + 12 + (3*16)) = 0.039 mol/dm³
Mass concentration = 1.06g/ (20cm³) = 0.053 g/dm³
Therefore, the concentration of the acid solution in mol/dm³ is 0.039 mol/dm³.