3 moles of A and 4 moles of Bare mixed together and allowed to come into equilibrium according to the following reaction A(g) + 4 B(g) hArr 2 C (g) + 3 D (g) When equilirium is reached , there is 1 mole of C. The equilibriumextent of the reaction is

3 moles of A and 4 moles of Bare mixed together and allowed to come in

1.	3 moles of A and 4 moles of Bare mixed together and allowed to come into equilibrium according to the following reaction A(g) + 4 B(g) hArr 2 C (g) + 3 D (g) When equilirium is reached , there is 1 mole of C. The equilibriumextent of the reaction is
Answer» `1//4` `1//3` `1//2` 1 Solution :`{:(,A,+,4 B,hArr,2C,+,3D),("INTIAL moles:" ,3,,4,,0,,0):}` 4 moles of B react with 1 mole of A. Hence , B is the limiting reactant . From 4 moles of B, if reaction were COMPLETE , 2 moles of C would be formed . Actual C formed = 1 mole . Hence extent of reaction completed `=1/2` . ALSO , when 1 mole of C is formed , out of 4 moles of B taken, 2 moles of B must have reacted . This also shows that the equilibrium extent is 1/2 .