O 12.00g of a potassium hydroxide, KOH 3.lution is mixed lead )nitrate, Pb(NO3)2 soiution, A clear Solution. KNO3 and a white precipitate of lead ) hydroxide, PBCOH)2 are foctned os productš with 40.009 of of potassium nitrate, (a) (omplete the chemical equation be low. Put in the states for all the products and balance the chemical equation. KOH (ag + Pb(NOgdz cog> (6) Determine the limiting realtant Creagent) for the chemical reaction. () How many grams op Solid precipitate, nany grams of Pb CoH)2 "can be produced. (d) Is the actual reaction yields only 21.5g Solid precipitate, determine the fercentage of Tyield.
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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