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ISOVOLUMETRIC PROCESS
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ISOVOLUMETRIC PROCESS
Definition: A thermodynamic process that takes place at constant volume so that no work is done on or by the system.
For example, when gas undergoes a change in temperature but no change in volume, no work is done by the system.
Bomb Calorimeter:
-this process takes place inside this device, which is a thick container in which a small quantity of a substance undergoes a combustion reaction.
-When energy is released by the reaction, it increases the pressure and temperature of the gaseous reaction. Because of the thick walls in the container, there is no change in volume of gas.
-Energy can be transferred to or from the container only as heat.
- (Recollecting back to Heat and energy in the last chapter) The increase in the temperature of the water surrounding the calorimeter, provides us with the information for calculating the total amount of energy produced by the reaction.
Interpretation
Energy added to the system as heat (Q>0) increases the system’s internal energy
Energy removed from the system as heat (Q<0) decreases the system’s internal energy.
By: Hedieh Anna Brittany Timo
ISOVOLUMETRIC PROCESS