What is the main purpose of using a calorimeter?
calorimeter, device for measuring the heat developed during a mechanical, electrical, or chemical reaction, and for calculating the heat capacity of materials. Calorimeters have been designed in great variety.
How do bomb calorimeters work?
A bomb calorimeter is a type of constant-volume calorimeter used in measuring the heat of combustion of a particular reaction. Electrical energy is used to ignite the fuel; as the fuel is burning, it will heat up the surrounding air, which expands and escapes through a tube that leads the air out of the calorimeter.
What is calorimeter explain its principle and construction?
The bomb is placed inside a copper vessel which contains water. There is a stirring device for agitating the water within the calorimeter. The calorimeter containing the bomb is placed in another container which acts as a heat insulator. The temperature of water in the calorimeter is measured by a thermometer.
What is the principle of calorimetry what material is calorimeter made up of?
Calorimeter is a device used to determine specific heat of a substance. Since copper is a good conductor of heat and has a very low specific heat capacity. it is the most suited material for making calorimeters.
What is the most important part of a calorimeter?
A simple calorimeter just consists of a thermometer attached to a metal container full of water suspended above a combustion chamber. According to this, the most important part would be the heat fusion of water, basically because this value will remain the same regardless the food you are using of the metal.
What is calorimeter made of?
Calorimeters are made of thin sheet of copper. For a calorimeter to be effective it must have two properties. (1) Although any object will use or loose some heat in experiments, a calorimeter should not absorb / loose too much of heat, otherwise it would affect the readings and final results.
Which type of fuel is used in bomb calorimeter?
In the bomb calorimeter, I g of the sample was taken in the crucible and was electrically ignited to burn with the presence of pure oxygen. During the combustion, heat was released and a rise in temperature was measured. The dry benzonic acid was used as a fuel to measure the effective heat capacity of water.
What is the principle of determining calorific value of fuel by bomb calorimeter?
An apparatus which is used for determining the calorific value of a fuel is known as a fuel calorimeter. The principle of all the calorimeters is the transference of heat of combustion of the given mass of fuel to water and the vessel.
Why benzoic acid is used in bomb calorimeter?
Benzoic acid (C6H5CO2H) is often used for this purpose because it is a crystalline solid that can be obtained in high purity. The combustion of 0.579 g of benzoic acid in a bomb calorimeter caused a 2.08°C increase in the temperature of the calorimeter.