X, Y and Z react in the `1:1:1` stoichiometric ratio.
The concentration of X, Y and Z we are found to vary with time as shown in the figure below:

If the above equilibrium is established in a `2.0 L` container by taking reactants in sufficient amount then how many moles of components Y must have reacted to establish the equilibrium?

Options

A. `0`
B. `6`
C. `12`
D. `8`

Answer

D

Explanation

`{:(,X(g),+,Y(g),hArr,Z(g)),("moles left",,,,,),(at t=t_(Eq),6xx2=12,,,,4xx2=8):}`
To get `8` moles of Z, moles of Y reacted `=8`