Assignment:
Question 1. In a standarisation of hydrochloric acid solution, 0.1232g of sodium carbonate were used. Calculate the number of moles of sodium carbonate used.
Question 2. In a standarisation of hydrochloric acid solution, 0.1099g of sodium carbonate were used. This resulted in a titre value of 25.49ml. calculate the number of moles of hydrochloric acid in 1 litre of analysed solution.
Question 3. In a standardisation of hydrochloric acid solution, the concentration was found to be 1.125 mol l(-1). Calculate the mass of hydrogen chloride in 1 litre of solution.
Question 4. The formula for sodium carbonate is Na2CO3. How many different endpoint are there in a reaction with hydrochloric acid solution?
Provide complete and step by step solution for the question and show calculations and use formulas.