A 25.2 grams of silver initially at 57.6°C is submerged into 84.3 grams of water at 26.9°C in an insulated container. What is the final temperature of both substances at thermal equilibrium?
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 25.2 grams of silver initially at 57.6°C is submerged into 84.3 grams of water at 26.9°C in an
insulated container. What is the final temperature of both substances at thermal equilibrium?
When 0.625 grams of ethanol (62H5OH) undergoes combustion in a bomb calorimeter attaining a
temperature difference of 2.8°C. Find the heat of the reaction for the combustion of ethanol in kJ/mol.
The heat capacity of the calorimeter is found to be 5.17 KJ/°C.
A calorimetry experiment was done to determine ∆H for the combustion of C6H12O6. A 2.34 g of
C6H12O6 was placed with 1.5 kg of water at an initial temperature of 25.0°C. As the combustion occur
the temperature raise by 2.00°C, calculate the ∆H from the data obtained, Ccal is 3.27 kJ/ °C.
The combustion of 1.00 mole of glucose, C6H12O6 liberates 1.90 x 103
kJ of heat. If 2.30 g of glucose
is burned in a calorimeter containing 0.560 kg of water, and the temperature of the assembly increases
from 22.5°C to 26.7°C, what is the heat capacity of the calorimeter?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
