A solution containing `3.00gm` of calcium nitrate in `100 c.c.` of solution had an osmotic pressure of `11.2` atmosphere at `12^(@)C`. Calculate the degree of ionisation of calcium nitrate at this dilution and temperature.

Answer

`alpha=0.81`

Explanation

`C="Molarity"`
`=("no. of moles of" Ca(NO_(3))_(2))/("Vol. of solution"(ml))xx1000`
`=(3xx1000)/(164xx100)=(30)/(164)`
`pi=i.CRT`
`11.2=ixx(30)/(164)xx0.082xx285`
`i=2.62=1+(3-1)alpha`
`2.62=1+2alpha`
`alpha=0.81`.