. 10g each of CH4 and O2 are kept in cylinders of same volume under same temperatures, give the pressure ratio of two gases.
(a) 2 : 1
(b) 1 : 4
(c) 2 : 3
(d) 3 : 4
Kindly explain the above question and its answer


 

Dear Student,

Moles =MassMolar massMoles of CH4(n1)=1016=0.625 molMoles of O2(n2)=1032=0.3125 molNow, PV=nRTor, Pn=RTVT and V are constants, soP1n1=P2n2or, P1P2=n1n2or, P1P2=0.6250.3125=2or, Ratio of pressures=2:1Hence, correct answer is (a)

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