One mole of `H_(2)` and 2 moles of `I_(2) ` are taken initially in a two litre vessel. The number of moles of `H_(2)` at equilibrium is 0.2. Then the number of moles of `I_(2)` and `HI` at equilibrium is

Options

A. `1.2,1.6`
B. `1.8,2.4`
C. `0.4,2.4`
D. `0.8,2.0`

Answer

A

Explanation

At equlibrium number of moles of `H_(2)=0.2` moles 0.8 moles of `H_(2)` reacts with `(2-0.8)` moles of `I_(2)` to from `(2xx0.8)` moles of HI
`H_(2)+I_(2)hArr2HI`
`{:("Inital no.",1,2,0),("of mole",,,),("No of moles"0.,2,,(-20.8)2xx0.8),("at equlibrium",,=1.2,=1.6):}`