`C_(2)H_(6)(g) ltimplies C_(2)H_(4)(g) + H_(2)(g)`
`{:(प्रारंभिक दाब,4,0,0),(साम्य पर दाब,4.0-p,P,P):}`
`K_(P) = (P_(C_(2)H_(4)) xx P_(H2))/(P_(C_(2)H_(6))`
`0.04 = (P xx P)/(4.0-P)`
`P^(2) =0.16-0.04 P`
`P^(2) + 0.04 P -0.16=0`
`P=((-0.04)+-sqrt(0.0016 - 4 xx 1 xx (-0.16)))/(2 xx 1)`
`=((-0.04 +- 0.8)/(2)) = 0.76/2=0.38`
साम्य पर `C_(2)H_(6)` का दाब `=4.0 - 0.38 = 3.62` atm