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In a study designed to prepare new gasoline-resistant coatings, a polymer chemist dissolves 6.117 g poly(vinyl...

In a study designed to prepare new gasoline-resistant coatings, a polymer chemist dissolves 6.117 g poly(vinyl alcohol) in enough water to make 100.0 of mL solution. At 25°C, the osmotic pressure of this solution is 0.266 atm. What is the molar mass of the polymer sample?

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Answer #1

Osmotic pressure= CRT

OSMOTIC PRESSURE= 0.266atm

Concentration= mole/volume

Mole= mass/molarmass

R= 0.0821 L.atm/mol.k

T= 25+273=298k

0.266 =( 6.117g/molarmass*0.1L)*0.0821*298

Molarmass= 5626.2g/mol

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