Chemistry · PYQ NEET UG 2022

Which one is NOT correct mathematical equation for Dalton’s Law of partial pressure? Here \( p \) = total pressure of gaseous mixture

1. \( p_i = x_i p \), where \( p_i \) = partial pressure of \( i^{\text{th}} \) gas, \( x_i \) = mole fraction of \( i^{\text{th}} \) gas in gaseous mixture
2. \( p_i = x_i p_i^\circ \), where \( x_i \) = mole fraction of \( i^{\text{th}} \) gas in gaseous mixture, \( p_i^\circ \) = pressure of \( i^{\text{th}} \) gas in pure state
3. \( p = p_1 + p_2 + p_3 \)
4. \( p = n_1 \frac{RT}{V} + n_2 \frac{RT}{V} + n_3 \frac{RT}{V} \)