The degree of dissociation for `PtCl_(4)` complex is `70%`. Calculate the Van't Hoff factor.

Explanation

Total moles=`1-alpha+4alpha+alpha=1+4alpha`
`i="Total moles at equilibrium"/"Initial moles" =(1+4alpha)/(1)(alpha=70%=0.7)`
`:.i =1+4 xx0.7 =3.8`
Alternative method
`i="Number of ions" xx alpha+(1-alpha)`
`=5xx0.7 + (1-0.7)`
`=3.5 + 0.3 = 3.8`