Answer Happy

Part 1. Determination of the Heat Capacity of the Calorimeter Experimental Data AHⓇ neutralization=-55.84 kJ mol-¹ Run 1 Mass of dry calorimeter 133.889 Molarity of standard HCI 3.008M Initial burette reading 21.00mL Final burette reading 35.10mL 23 13 C Initial temperature of HCI Initial temperature of NaOH 22.54°C 30.579 Mass of calorimeter and NaCl solution 410.41 Extrapolated temperature, T, (2 dp) Calculated Values Volume of standard HCl used (2 dp) Moles of H* used (4 SF) Heat of reaction, qm (4 SF) Heat absorbed by calorimeter and the NaCl solution, qb (4 SF) abs Avg temperature of HCl and NaOH, T, (2 dp) AT, T₁-T, (2 dp) Mass of NaCl solution (2 dp) Cal (2 dp) 8) Average C (2 dp) 14.10mL 2284°C 117.57°C ΤΑ Run 2 133.800 22.20mL 36.20mL 23.02 C 21.94°C 41.68 14.00mL 22.48°C 19.20°C OD GRAPHITE

Part 2. Determination of the Concentration of a Strong Acid Solution Experimental Data AH = -55.84 kJ mol-¹ neutralization Unknown number Mass of dry calorimeter Initial burette reading Final burette reading Initial temperature of HCl Initial temperature of NaOH Mass of calorimeter + NaCl solution Extrapolated temperature, T, (2 dp) Calculated Values Value of C (Average from Part 1) (2 dp) Volume of unknown M HCl used (2 dp) Avg temperature of HCl and NaOH, T, (2 dp) AT, T₁-T, (2 dp) Mass of NaCl solution (2 dp) Heat absorbed by calorimeter and the NaCl solution, 9b (3 SF) Heat of reaction, qm (3 SF) Moles of H* used (3 SF) Molarity of unknown HCl solution (3 SF) 133.889 21.90mL 36.10m L 23.91°C 22:20°C 30.309 36.78 C

Worksheet cal" Show one calculation for the heat capacity of the calorimeter, C Report the value in J K-¹, to 2 dp. Do not use scientific notation. This is not necessarily the correct number of SF but will prevent round- ing errors in subsequent calculations. 9abs = CAT+mc,AT Show the calculation for the heat absorbed by the calorimeter and the NaCl solution in Part 2. 9abs = CAT+mcAT