1.

The solution containing 4.0 gm of a polyvinyl chloride polymer in 1 litre of dioxane was found to have an osmotic pressure 6.0xx10^(-4) atmosphere at 300K, the value of R used is 0.082 litre atmosphere "mole"^(-1)K^(-1). The molecular mass of the polymer was found to be

Answer»

`3.0xx10^(2)`
`1.6xx10^(-5)`
`5.6xx10^(4)`
`6.4xx10^(2)`

SOLUTION :`pi V=(w)/(m)RT`
`THEREFORE 6xx10^(-4)xx1=(4)/(m)xx0.0821xx300 , m = 1.64xx10^(5)`


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