nally4063 nally4063 28-01-2024 Chemistry contestada 12.6 g of impure Na₂CO₃ is treated with 500 ml of 0.5 M HCl for complete reaction. The remaining HCl is back titrated by adding 100 ml of 0.5 M NaOH. Calculate the percentage purity of Na₂CO₃. a) 60% b) 70% c) 80% d) 90%
