Check all the correct statements. Note: Push yourself to understand why these statements are true or false. If false think about an example that contradicts the statement, or think about how you would formulate the statement so it correct. You will not see these exact questions in an exam, so it is important that you understand the concepts so you can answer a similar question that is formulated differently. U The heat capacity of an ideal gas does not depend on what molecules the gas is made of. AU-qu-nCAT is always valid for any type of ideal gas. This expression even works, if the volume is not constant during the process. AU=0 for any process that does not result in a change in temperature. At constant temperature, the internal energy of a real gas changes with increasing pressure because molecules are brought closer together. The internal energy of an ideal gas (those that obey PV = nRT) depends only on the temperaturo of the system. The internal energy of any gas depends only on the temperature of the system. A cyclic path (initial state final state) always results in AU=0

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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.