Find the enthalpy of neutralization of 75.5mL 1.00M aqueous sodium hydroxide with 40.7mL 1.00M hydrochloric acid if after mixing the two solutions the temperature went up 6.2∘C. Report the amount of the limiting reagent in mmol: (enthalpies given: NaOH = -425.61, Cl- = -167.16, H+ = 0)
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.
Find the enthalpy of neutralization of 75.5mL 1.00M aqueous sodium hydroxide with 40.7mL 1.00M hydrochloric acid if after mixing the two solutions the temperature went up 6.2∘C. Report the amount of the limiting reagent in mmol:
(enthalpies given: NaOH = -425.61, Cl- = -167.16, H+ = 0)
Given that,
Volume of NaOH = 75.5 mL
Molarity of NaOH = 1.00 M
Volume of HCl = 40.7 mL
Molarity of HCl = 1.00 M
Now calculate the no.of mole of NaOH
The reaction is
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