What is it ?
is the study of energy changes that occur during chemical reactions and changes in state.
it helps in determining whether a reaction is spontaneous or non-spontaneous.
branch of chemistry that deals with the quantity of heat evolved or absorbed during a chemical reaction.
Everyday Applications
Cooking
cooking uses heat in different ways whether it is by using different types of reactions to heat food up or to even cool something down.
Heat occurs in 3 ways
Cooking is the process of changing the chemistry of food by transferring energy to the food long enough so that it is safe and digestible,and accomplishes the ideal flavor, succulence, appearance, and sustenance.
Convection: heat transfer by flowing current, need the physical flow of matter. Ex: cooking meat by boiling it in water
Radiation: heat transfer through direct exposure of light energy. Ex: using a microwave.
Conduction: heat transfer by direct contact, requires things to touch. Ex: cooking a hot dog in a pan.
Refrigerators
We use refrigerators in our day to day lives to store our food and keep it cold
We cook everyday for ourselves and it has to do with heat and thermochemistry
Refrigerator compressors and chemical hand warmers are both real-life examples of enthalpy.
Both the vaporization of refrigerants in the compressor and the reaction to the iron oxidation in a hand warmer generate a change in heat content under constant pressure.
refrigerators operate by the same reverse-heat-engine principle of converting work to heat, but use substances other than air.
The working substance in a modern refrigerators is called the coolant; the coolant changes from gas to liquid as it goes from higher to lower temperature.
How is it relevant to real life?
The principles of thermochemistry also help in inventing several devices that help in everyday life such engine, batteries, refrigerators etc.
Thermochemistry is a very important field of study because it helps to determine if a particular reaction will occur and if it will release or absorb energy as it occurs.
Numerous things in reality are because of the transfer of heat. For instance, placing ice into your glass of water or even the process of burning fuel for a vehicle.
It's important because energy and its uses are important to society
All living things rely on thermal chemical reactions in order for life exist.