The enthalpy of neutralization of a newly discovered compound, J(OH)3, was determined using a styroball calorimeter. The calorimeter was first calibrated using 10.00 mL of 0.124 M NaOH and 13.50 mL of 0.175 M HCI (AH = -55.85 kJ/mol) and a temperature rise of 6.3 °C was recorded. Using the same calorimeter, 8.50 mL of 0.150 M of J(OH)3 was reacted with 11.30 mL of 0.130 M HCI and the temperature changed from 26.9 °C to 21.4 °C. a. What is the heat capacity of the calorimeter? o. Write the balanced chemical equation for the reaction between J(OH)3 and HCI. c. Identify the limiting reactant in the reaction between J(OH)3 and HCI. d. What is the enthalpy of the reaction of J(OH)3 and HCI?
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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![The enthalpy of neutralization of a newly discovered compound, J(OH)3, was determined using
a styroball calorimeter. The calorimeter was first calibrated using 10.00 mL of 0.124 M NaOH
and 13.50 mL of 0.175 M HCI (AH = -55.85 kJ/mol) and a temperature rise of 6.3 °C was
recorded. Using the same calorimeter, 8.50 mL of 0.150M of J(OH)3 was reacted with 11.30 mL
of 0.130 M HCI and the temperature changed from 26.9 °C to 21.4 °C.
a. What is the heat capacity of the calorimeter?
b. Write the balanced chemical equation for the reaction between J(OH)3 and
HCI.
c. Identify the limiting reactant in the reaction between J(OH)3 and HCI.
d. What is the enthalpy of the reaction of J(OH)3 and HCI?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F63609da7-c7c1-4c5e-93ce-e53893107bc1%2F48992daa-7301-4c34-af99-32d769b5b0e4%2F9ihxjky_processed.png&w=3840&q=75)
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