Title: ColligativeProperties & OsmoticPressure
Important terms to study from this lab assignment are colligativeproperties, membrane permeability and osmoticpressure. First, colligativeproperties are “those of a solution that depend solely on the number of solute particles...
Department of Chemistry
[ColligativeProperties & OsmoticPressure]
The experiment this week had two different purposes. The first is to teach us about freezing points. This lab was designed to show us the freezing point of a pure solvent, in...
ColligativeProperties & OsmoticPressure
Peter Jeschofnig, Ph.D. Version 42-0149-00-01
Lab RepoRt assistant
This document is not meant to be a substitute for a formal laboratory report. The Lab Report...
-electrolytes 6. solve problems involving freezing point depression, boiling point elevation, vapor pressure lowering, and increase in osmoticpressure 7. use Raoult’s Law to relate vapor pressure lowering to solute mole fraction 8. explain different properties of colloidal systems such as size of particles...
Ankur Sindhu Sep 20, 2011
Prof.: Dr. Nidhal Marashi
Lab 1: ColligativeProperties & OsmoticPressure
Purpose: The purpose of this laboratory was to gain an understanding of the differences between the freezing points of pure solvent to that of a solvent in a...
, vapor pressure lowering, and osmoticpressure.
I. ColligativeProperties of Non-volatile non electrolytes Solution
II. ColligativeProperties of Electrolyte Solution
Saline solutions are generally composed of sodium chloride in water. A saline solutions main use is to rehydrate...
the experiment, first using 9 mM albumin in
the left beaker, then 9mM glucose. Click Record Data after
each run; also record your data in chart.
Diffusion Rate and OsmoticPressure
(Figure 1.3). The screen
is similar to the one we saw for the Simple Diffusion
Opening screen of the Osmosis experiment.
experiment. The main change is that on top of each beaker is
called the freezing point depression, which is the change in freezing point. Tfinal – Tinitial = ∆Tf . The freezing point depression is one of the colligativeproperties of a solution. Colligativeproperties include boiling point elevation, osmoticpressure, and vapor pressure lowering.
pair effect depends upon the properties of the species dissolved and the concentration of solute. The more concentrated the solute, the greater percentage of ion pairing takes place.
The colligativeproperties of solutions are;
1. The solution shows an increase in osmoticpressure between it and...
between the beakers.
9. Leave the pressure at 50 and repeat the experiment.
When the timer has reached 60 minutes, perform a membrane
analysis and click Record Data.
10. Click Flushand return the membrane
11. Repeat steps 8–10 with the remaining two membranes.
Be sure to...
ColligativeProperties & OsmoticPressure (Lab – Chapter 13)
Introduction: In this lab, we are going to observe the difference in freezing point between pure water and salt water. We will also observe the permeability of an egg shell membrane and dialysis tubing, acting in place of a human...
8. Deduce van’t Hoff’s equation for the osmoticpressure using the laws of osmoticpressure.
9. A solution of can-sugar (mol mass = 342) containing 34.2 g litre-1 has an osmoticpressure of 2.4 atm at 20°C. Calculate the value of R in litre-atmospheres.
10. Experiment shows...
Introduction: When dealing with unknown solutions, one thing students are going to deal with is colligativeproperties. One colligativeproperty that was dealt with in this lab was the freezing point depression, which is the process of decreasing the freezing point of any solvent by...
the properties of the solution. The properties of solution that depend only on the concentration of solute particles and not on the nature of solute particles present are called colligativeproperties. These are vapour pressure lowering, boiling point elevation, freezing point depression and osmotic...
There are four main colligativeproperties of a solution, namely: boiling point elevation, freezing point depression, vapor pressure lowering, and osmoticpressure. In this exercise, the two former were focused more than the other two. However, vapor pressure lowering has an effect on the freezing...
solute particles, not the type of solute. These properties are called colligativeproperties and include:
G G G G
vapor pressure lowering freezing-point depression boiling-point elevation osmoticpressure
Vapor Pressure Lowering
If a liquid is placed in a sealed container, molecules will...