Here is a list of five compounds: MX, M,X, MX.„ M,X, and MX,. 2+ M represents a metal ion, but not necessarily the same. Depending on the salt, M could stand for Na, K Mg X represents an anion, but not necessarily the same. Depending on the salt, X could stand for Cl, Br, So, .... In other words, the nature of the cation and the anion in each salt is rather unimportant, only the cation to anion ratio matters. All five compounds have the same K Select all compounds that have the lowest solubility (in mol/L). sp" Select one or more: a. MX2 b. M,X C. Because all five substances have the same K they also have the same solubility in mol/L. d. MX e. Because all five substances have the same K they also have the same solubility in g/100g water. O MX, g. Cannot be answered without knowing the numerical value for K sp' O h. M,X
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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