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How do u find partial pressure from a balanced equation

User Edmund Lee
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1 Answer

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Partial pressure can be calculated from balanced equation as :

Partial pressure can be calculated from total pressure and mole fraction of a molecule. The equation of partial pressure is given as:


P_(partial )=P_(total )* X

Mole fraction can be calculated from number of moles of different substances, that we can get from a balanced equation.

If a balanced equation is as follows:

aA+bB---->cP

Mole fraction of A will be =


(n_(a))/(n_(a)+n_(b)+n_(c))

And partial pressure of A will be:


P_(A)=P_(T)* (n_(a))/(n_(a)+n_(b)+n_(c))

User Mohan Gulati
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