Question

How do u find partial pressure from a balanced equation

Answer 1

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:  

$P_{partial }=P_{total }\times X$  

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 =  

$\frac{n_{a}}{n_{a}+n_{b}+n_{c}}$  

And partial pressure of A will be:

$P_{A}=P_{T}\times \frac{n_{a}}{n_{a}+n_{b}+n_{c}}$