A calorimeter with a mass of 1.63 kg and a specific heat capacity of 897.5 J/kg.K contains 880 g of water. 3.00 g of acetic acid is burned in an excess of oxygen gas in the calorimeter to give carbon dioxide gas and liquid water. The temperature rises from 20.1 C to 28.6 °C. The specific heat capacity of water is 4.18 J/g°C. Write down a stoichiometric equation for this reaction and calculate the amount of heat produced by 2 moles of acetic acid
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.
A calorimeter with a mass of 1.63 kg and a specific heat capacity of 897.5 J/kg.K
contains 880 g of water. 3.00 g of acetic acid is burned in an excess of oxygen gas
in the calorimeter to give carbon dioxide gas and liquid water. The temperature rises
from 20.1 C to 28.6 °C. The specific heat capacity of water is 4.18 J/g°C. Write
down a stoichiometric equation for this reaction and calculate the amount of heat
produced by 2 moles of acetic acid
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