The molar heats of fusion and vaporization for silver are 11.3 kJ/mol and 250.0 kJ/mol, respectively. Silver's normal melting point i= 962 °C, and its normal boiling point is 2212 °C. a. What quantity of heat is required to melt 15.0 g of silver at 962 °C? kj b. What quantity of heat is liberated when 4.34 g of silver vapor condenses at 2212 °C? kj Submit Answer In progress Retry Entire Group 9 more group attempts remaining
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.
![[Review Topics]
The molar heats of fusion and vaporization for silver are 11.3 kJ/mol and 250.0 kJ/mol, respectively. Silver's normal melting point is
962 °C, and its normal boiling point is 2212 °C.
a. What quantity of heat is required to melt 15.0 g of silver at 962 °C?
kj
b. What quantity of heat is liberated when 4.34 g of silver vapor condenses at 2212 °C?
kj
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