In a balanced equation
`H_(2)SO_(4)toxHItoH_(2)S+yI_(2)+zH_(2)O`
The values of x,y,z are

Options

A. `x =3, y=5, z=2`
B. `x=4, y=8, z=5`
C. `x=8, y=4, z=4`
D. `x=5, y=3, z=4`

Answer

C

Explanation

`H_(2)SO_(4) + HI to H_(2)S+I_(2)+H_(2)O`
Balancing by partial equation method,
`({:(,,2HI,to,2[H],+,I_(2)xx4),(H_(2)SO_(4),+,8[H],to,4H_(2)O,+,H_(2)S):}/((H_(2)SO_(4),+,8HI,to,4H_(2)O,+,4I_(2)+S)))/`
c.f., `H_(2)SO_(4) + xHI to H_(2)S + yI_(2)+zH_(2)O`
`:. x = 8, y = 4, z = 4`