Question

For quantitative analysis 3 g of mixture of sodium carbonate, sodium bicarbonate and sodium chloride was supplied to students. They found out on gentle heating, the mixture liberates 56 mL of CO₂ at NTP and another 3g of the same mixture requires 30.5 mL of 1N hydrochloric acid for complete neutralization. Calculate the percentage of sodium chloride.

Answer 1

Given mix of NaHCO₃ + Na₂CO₃ + NaCl = 3gm

On heating NaHCO₃ undergoes decomposition & gives CO₂