Explain why a 0.30 M glucose, C6H12O6, solution as well as a 0.15 M KCl solution at the same temperature have the same osmotic pressure.?

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Answer 1 · 2018-04-19T01:46:10

The Osmotic pressure is givenas $pi$ ;

where $pi= iCRT$ ;

$i$ : van't hoff factor

$C$ : concentration of solute

$R$ : Universal gas constant

$T$ : Temperature in Kelvin

$i$ for Glucose $=1$

$i$ for $KCl =2$

For the question given above it turns out that the $R$ and $T$ are same for both the solutes.

$:. pi prop iC$

$:.$ For Glucose : $pi prop 1xx 0.30M =0.30M$

For $KCl$ : $pi prop 2xx0.15M =0.30M$

Thus both have same Osmotic pressure.