In a coffee-cup calorimeter, 50.0 mL of 0.100 M AgNO3 and 50.0 mL of 0.100 M HCl are mixed to yield the following reaction:
Ag+ (aq) + Cl- (aq) → AgCl (s)
a. The two solutions were initially at 22.6 °C and the final temperature of the mixture
is 23.4 °C. Calculate the magnitude of heat energy that is transferred in this experiment. Assume that each individual solution has a density of 1.0 g/mL and a specific heat of 4.18 J/g°C.
b. Using the balanced equation above and your answer to part (a), calculate the value
of the enthalpy change (AH) of the reaction in units of kJ/mol.
c. According to your answer in part (b), is the precipitation of silver chloride an
endothermic or exothermic process? Briefly explain your choice.
