A 6.4 gm sample of methanol (CH_(3) OH) was placed in an otherwise empty 1 litre flask and heated to 227^(@)C to varpoise the methanol. Methanol vapour decomposes by following gasesous compound to effuse out of flask. Measurement shows it contains 32 times as much as H_(2) (g) as CH_(3)OH (g). Then Total pressure of mixture at equilibrium.

A 6.4 gm sample of methanol (CH_(3) OH) was placed in an otherwise emp

1.	A 6.4 gm sample of methanol (CH_(3) OH) was placed in an otherwise empty 1 litre flask and heated to 227^(@)C to varpoise the methanol. Methanol vapour decomposes by following gasesous compound to effuse out of flask. Measurement shows it contains 32 times as much as H_(2) (g) as CH_(3)OH (g). Then Total pressure of mixture at equilibrium.
Answer» `2.08` atm `20.8` atm `5.2` atm `10.4` atm Solution :`K_(C) = (4^(2))/(5^(2)) xx (1)/(5^(2)) = ((4)/(5))^(4)` `n_("total") = a_(0) (1 + 2 alpha) = 0.2 (1 + (8)/(5)) = (2.6)/(5)` `P_("total") = (n_(t))/(V) RT = (2.6)/(5) xx 0.08 xx 500` `P_("total") = 20.8` atm