The equilibrium constant for the reaction `w+x hArr y+z` is `9`. If one mole of each of w and x are mixed and there is no change in volume, the number of moles of y for formed is

Options

A. `0.10`
B. `0.50`
C. `0.75`
D. `0.54`

Answer

C

Explanation

`{:(,W,+,X,hArr,Y,+,Z","),("Initial",1,,1,,0,,0),("At eq.",1-x,,1-x,,x,,x):}`
`K=9=x^(2)/((1-x)^(2))`
`:. x=0.75`
moles of `y=x=0.75`