Estimate the molar mass of the dissolved polymer, Chemistry

(a) Define the so-called 'colligative' properties, and write brief notes about each of them.

(b) A system comprises two liquid components.  State whether the system would be likely to display positive deviation from ideality, approximate ideality, or negative deviation, if:

(i)  the Henry's law constants are larger than the Raoult constants for both components;

(ii) the Henry's law constants are approximately equal to the Raoult constants for both components;

For clarity, sketch the overall profile of total vapour pressure with system composition for answers (i) and (ii) above.

(c) An osmotic molecular-weight determination for a large polymer dissolved in benzene resulted in the following data:

Amount dissolved in 250 ml benzene solution

Osmotic pressure/Pa

exactly 1.5 g

600

exactly 1.0 g

400

exactly 0.5 g

200

Write down the van't Hoff equation applicable to this situation, and estimate the molar mass of the dissolved polymer.

2387_Negative deviation or positive deviation1.png

Posted Date: 2/25/2013 1:28:54 AM | Location : United States







Related Discussions:- Estimate the molar mass of the dissolved polymer, Assignment Help, Ask Question on Estimate the molar mass of the dissolved polymer, Get Answer, Expert's Help, Estimate the molar mass of the dissolved polymer Discussions

Write discussion on Estimate the molar mass of the dissolved polymer
Your posts are moderated
Related Questions

Which processes is used to harden a steel? Quenching process is used to harden the steel

tests for the presence of iodoform

Q. Explain Colligative properties of Solutions? Colligative properties  of solutions are those properties which depend on the concentration of the solution rather that the ty

Why do Zr and Hf show similar properties?

Higher fatty acids - Carboxylic acids Stearic, Palmitic, and oleic acids are found in natural fats and oils like glyceryl esters. Higher fatty acids derived their names from


Nuclei tend to have more neutrons than protons at high mass numbers because: (1) Neutrons are neutral particles   (2) Neutrons have more mass than protons   (3) More neut

Chain Lengthening of Aldoses (Killiani-Fischer synthesis) The conversion of an aldose to the next higher member includes the subsequent steps : (a) Creation of a cyanohydrin

A solvated electron is a free electron in (solvated in) a solution, and is the least possible anion. Solvated electrons happen widely although they are often not practical directly