Question

Data and Results: Calorimetry A. Specific Heat: Unknown metal number Unknown solid number Trial 2 Trial 1 42.SI3 Mass of test tube and stopper Mass of stoppered test tube and metal Mass of calorimeter Mass of calorimeter and water Mass of water Mass of metal Initial temperature of water in calorimeter Initial temperature of metal Equilibrium temperature of metal and water in calorimeter 38.394g 53 13 g 63 to2g 0o C water (inal-onitiat oC oC Imetal qwater Specific heat of the metal Approximate molar mass of metal Identity of unknown B. Heat of Solution: Mass of calorimeter and water Mass of beaker and solid Mass of beaker Mass of water Mass of solid Initial temperature of water in calorimeter Final temperature of water in calorimeter water (surroundings) reaction (system) soy continued on back Experiment 6 The quantity you have just calculated is approximately* equal to the your sample. Calculate the heat of solution per gram of solid sample J/g State your " The solution is endothermic exothermic. Circle the correct answer . reasoning Molar mass of the compound Heat of solution per mole of compound kJ/mole C. Heat of Neutralization: Initial temperature of the HCI solution Initial temperature of the NaOH solution Final temperature of the neutralized solution Change in T (final temperature minus the average of the initial temperatures of HCI and NaOH) Mass of solution and calorimeter Mass of solution olusion(undings) for the neutralization reaction reaction ostm for the neutralization reaction moles of water formed from reaction 231-C mol AH per mole of H O produced by the reaction kJ/mole TA Signature Calculations: Source of Error ·The value of AH will be approximate for several reasons. One is that we do not include the amount of heat absorbed by the solute. This effect is smaller than the likely experimental error, thus we ignore it Experiment 6-8

Answer 1

Part A

∆ t( water ) 8.4° C 8.2°C

∆t(metal) 70.3°C 71.0°C

qwater 1348.09J 2190.25J

Specific

heat of metal 0.3606 J/°Cg 0.580 J/°Cg

Molar mass not mentioned

PartB.

q water 1829.61 J

q reaction -1829.61J

∆ H solution -243.93 J/g

Molar mass not mentioned

Part C

q solution 12257.64 J

q Reaction -12257.64 J

Molarity and volume is not mentioned.