AP EAMCET202017 Sep 2020Morning ShiftChemistryStates of MatterActual
A gaseous mixture of 3 gases (A, B ) and (C ) has a pressure (10 ~atm ). The total number of moles are 10. If partial pressure of gases (A ) and (B ) are (3 ~atm ) and (1 ~atm ) respectively and if molar mass of gas (C ) is 2 . Calculate the weight of (C ) in the mixture.
Options
- A(12 ~g )
- B(24 ~g )
- C(8 ~g )
- D(2 ~g )
Correct answer
A. (12 ~g )
Step-by-step solution
(i) (p=p_A+p_B+p_C ) (Dalton's law) (( p= total pressure, p^ = partial ) pressure, ( aligned & n= number of moles ) & p_C=p- (p_A+p_B )=10-(3+1)=6 ~atm aligned ) (ii) ( aligned & p_C= n_C n_A+n_B+n_C p & n_C 10 10=n_C & n_C=p_C=6 aligned ) (iii) Weight of (C ) in the mixture (=n_C ) molar mass of (C ) (=6 2=12 ~g )