The fizz produced when an Alka-Seltzer tablet is dissolved in water is due to the reaction between sodium bicarbonate, NaHCO3, and citric acid, H3C6H507: 3 NaHCO3 (aq) + H3C6H5O7 (aq) 3 CO₂ (g) + 3 H₂O(l) + Na3C6H507 (aq) In a certain experiment 0.051 moles of sodium bicarbonate and 0.031 moles of citric acid are allowed to react. Which chemical is the limiting reactant? Select an answer Which chemical is the excess reactant? Select an answer How much of the limiting reactant is left over when the reaction is complete? moles How much of the excess reactant is left over when the reaction is complete? *record an answer in 2 significant figures; standard notation* moles
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.
Trending now
This is a popular solution!
Step by step
Solved in 6 steps
