A metal sample weighing 51.0 g and at a temperature of 100.0 oC was placed in 38.8 g of water at 25.3oC. At equilibrium the final temperature of the water and metal was 33.2oC.a. What was the change in temperature for the water?oC b. What was the temperature change for the metal?oC c. Taking the specific heat of water to be 4.184J/goC,caculate the specific heat of the metal.J/goC d. What is the approximate molar mass of the metal? g/mol
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 metal sample weighing 51.0 g and at a temperature of 100.0 oC was placed in 38.8 g of water at 25.3oC. At equilibrium the final temperature of the water and metal was 33.2oC.
a. What was the change in temperature for the water?oC
b. What was the temperature change for the metal?oC
c. Taking the specific heat of water to be 4.184J/goC,caculate the specific heat of the metal.J/goC
d. What is the approximate molar mass of the metal? g/mol
Trending now
This is a popular solution!
Step by step
Solved in 6 steps with 3 images
