Q.

Which one is not correct mathematical equation for Dalton’s Law of partial pressure Here p = total pressure of gaseous mixture          [2022]

1 pi=xipi0, where xi = mole fraction of ith gas in gaseous mixture
                        pi0 = pressure of ith gas in pure state  
2 p=p1+p2+p3  
3 p=n1RTV+n2RTV+n3RTV  
4 pi=xip, where pi = partial pressure of ith gas
                      xi = mole fraction of ith gas in gaseous mixture  

Ans.

(1)