explain partial molar properties and it's signification. long type answer please Bsc part 3 ka question hai
Answers
Answer:
A partial molar property is a thermodynamic quantity which describes the variation of an extensive property of a solution or mixture with changes in the molar composition of the mixture at constant temperature and pressure. It is the partial derivative of the extensive property with respect to the amount (number of moles) of the component of interest. Every extensive property of a mixture has a corresponding partial molar property.
Answer:
When two substances are combined into a mixture, we expect the properties of the mixture to be some combination of the properties of the two pure substances.
For some properties, we can simply take a weighted average of the two pure substances. Mass works like this; atoms of one substance don’t suddenly become more or less massive when they’re combined with another substance. We can write
m=mAXA+mBXB
However, not all properties behave in this way. When salt is dissolved in water, the volume of the water does not increase by the volume of the salt added! The volume increase is described by a quantity we call the partial volume of salt in water. As you might expect, the partial molar volume of salt in water is the increase in the volume of water caused by adding one mole of salt.
In general, the partial molar property of a substance X in a given mixture is the increase in that property of the mixture when one mole of X is added.
Explanation:
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