Macmillan L A certain dose of Tums contains 750.0 mg of calcium carbonate, CaCO3, in each tablet. In this problem, you will follow the steps to calculate how many grams of stomach acid, HCl, are neutralized by one tablet of Tums. Balance the chemical equation for the reaction of HCI with CaCO3. chemical equation: Using the balanced equation, determine how many moles of HCI will react with 1 mol of CaCO3. moles of HCI: HCI+CaCO3 -> → CaCl₂ + CO₂ + H₂O Calculate how many moles 750.0 mg CaCO3 is. 750.0 mg CaCO3 = mol mol CaCO3
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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