Chapter 13, Problem 13.135MP

(a)

Interpretation Introduction

Interpretation:

At equilibrium, the molar concentrations of dimer and monomer of acetic acid dissolved in benzene has to be calculated.

Concept introduction:

Calculation of equilibrium concentration from initial concentration:

• The balanced equation for given reaction has to be written.
• Set up an equilibrium table to calculate x value
• The value of x is solved by substituting concentrations of chemical species in equilibrium constant expression.
• The concentration of chemical species at equilibrium is calculated from value of x

(b)

Interpretation Introduction

Interpretation:

The osmotic pressure for given solution has to be determined.

Concept introduction:

Osmotic pressure:

Flow of solvent molecules via semipermeable membrane to a region of solute with higher concentration is known as osmosis. The least pressure requires for a solution to stop movement of its solvent via semipermeable membrane is called as osmotic pressure.

Jacobus van 't Hoff introduced a formula which relates osmotic pressure to concentration of solute. The formula is,

$\prod \text{=}\text{iMRT}$

Where,

$\prod$ is osmotic pressure.

M is molar concentration

R is gas constant

T is temperature