Macmillan Learning Attem A sample of 69.8 g of tetraphosphorous decoxide (P4O10) reacts with 64.6 g of water to produce phosphoric acid (H,PO4) according to the following balanced equation. P4O10+6H₂O 4H3PO4 Determine the limiting reactant for the reaction. H3PO4 H₂O PO 10 Calculate the mass of H,PO produced in the reaction. mass of H3PO4: 97.994 Calculate the percent yield of H3PO4 if 51.9 g of H3PO4 is isolated after carrying out the reaction. g
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.
Chemistry
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