Assignment:
Question 1. 0.1060g of sodium carbonate, dissolved in 20ml of water, was expected to give a titre of approximately 20ml of hydrochloric acid. what would you expect the approximate titre value to be if the carbonate had been dissolved in 40ml of water?
Question 2. 20ml of a 1.103% w/v calcium lactate solution was analysed by titration against disodium edetate. Calculate the number of moles of calcium lactate in the 20ml sample.
Question 3. 20.0ml of an approximately 1%w/v calcium lactate solution titrated against 18.12ml of 0.0502M disodium edetate solution. Calculate the mass of calcium lactate in the 20.0ml sample
Question 4. 20.0ml of a 1.011%w/v calcium lactate solution titrated against 18.34ml of 0.0503M disodium edetate solution. Calculate the molecular mass of calcium lactate.
Provide complete and step by step solution for the question and show calculations and use formulas.