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Hello everyone.
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Today we are going to discuss about the laws of thermodynamics.
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First of all, we have first law of thermodynamics.
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This law states that energy or mass can neither be created nor destroyed, but surely it can be converted from one form to an other, or it is interchangeable.
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This law is also termed as law of conservation of energy.
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Let me write it.
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Law of conservation of energy.
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Let's take some example.
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It is a formation of sodium chloride.
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It includes the chemical reaction between sodium and chloride ions, resulting in the formation of sodium chloride crystal.
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Now, if we say it is an endothermic reaction, it requires energy, so the total change in energy will be, we write it, delta u denotes the total change in energy is equal to work done in the chemical reaction minus total energy provided or heat energy provided to the system.
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If q amount of heat energy is provided for this chemical reaction to take place, and w was the work or the chemical reaction that took place actually, the difference of the two will give us the remaining energy or the change in energy...