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Part 2 Reaction of hydrated sodium carbonate with sulphuric acid Na Co,.104,0 (s) + H,50, (aq) → Na250, (aq) + 10H20(aq) The same method is repeated using solid B, hydrated sodium carbonate with 25 cm sulphuric acid solution. The mass of solid used and the drop in temperature is recorded. The experiment is repeated and the results recorded in the table below. Readings and calculations a) Complete the table and calculate the mean temperature drop and the mean mass of hydrated sodium carbonate used. [1] Experiment 1 Experiment 2 Mass of solid B and container, g 7.41 7.32 1.25 1.26 Mass of empty container, g Mass of solid B, 8 Initial temperature, °C 24.8 24.5 Final temperature, °C 23.4 23.2 TTAFG/2021 INTERNATIONAL FOUNDATION GROUP b) Calculate the mean temperature drop obtained and the mean mass of B used. [2] mean temperature drop = °C mean mass of B used =

b) Calculate the mean temperature drop obtained and the mean mass of B used. [2] mean temperature drop =. ...C mean mass of B used = . -g c) Calculate the heat absorbed in the reaction of hydrated sodium carbonate, B, with sulphuric acid. Note - Assume that there is 6.3 g of water from the hydrated sodium carbonate, in addition to 25.0 g of water from the aqueous sulphuric acid. [1] heat absorbed = . d) Calculate the enthalpy change for the reaction of 1 mole of hydrated sodium carbonate with sulphuric acid, in kJ mol? The relative formula mass of hydrated sodium carbonate = 286 gmol?. [3] enthalpy change of reaction = ..... ..k] mol-