1.20 g sample of and was dissolved in water to form 100 mL of a solution
CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance
Problem
1.20 g sample of Na2CO3 and K2CO3 was dissolved in water to form 100 mL of a solution. 20 mL of this solution required 40 mL of 0.1 N HCl for complete neutralization. Calculate the mass of Na2CO3 in mixture. If another 20 mL of this solution is treated with excess of BaCl2, what will be the mass of precipitate? (Roorkhee 1997)