Q13: Oxygen gas produced from the reaction below was collected above the water at 30 Cº and in a container has capacity 150 cm³ until the total pressure reached 80.0 kPa. 2KC1032KCl +30₂ If the vapor pressure of water at 30 Cº equal to 4.24 KPa. Determine: 1. The mass in (g) of dry oxygen produced. (8 degree) 2. The mass in (g) of KClO3that consumed in reaction. (7 degree) =40 0= 169,CI= 35.5- R= 8.314- N.m {K = g mole mole mole mole.K
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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