22. Following the steps in Hess' Law, which compounds/elements will be cancelled? 2 FeO (s) → 2Fe(s) + O2(g) 2 Fe (s) + 3/2 O2(g) → Fe₂O3 (g) C. Fe A. FeO B. 02 D. Fe₂O3 23. How will you create a more space for particles to collide? A. Raise the pressure B. Raise the temperature B. Increase the concentration D. Increase the surface area 24. For a reaction 2A + B 2C, with the rate equation: Rate = k[A]2[B]. What is the correct reaction order? A. the order with respect to A is 1 and the order overall is 1 B. the order with respect to A is 2 and the order overall is 2 C. the order with respect to A is 2 and the order overall is 3 D. the order with respect to B is 2 and the order overall is 2 25. How will you conceptualize the collision theory? A. particles must collide in order to react B. particles must not collide with the proper orientation C. particles must collide with insufficient energy to reach the activated complex in order to react D. particles must move slowly when they collide, otherwise they simply "bounce off" one another
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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