Non-electrolyte solutions, Chemistry

NON-ELECTROLYTE SOLUTIONS

Composition:

A solution is a mixture of two or more substance; this consists of one or more minority substances, the solute(s), dispersed in a majority substance, present in large amounts, the solvent. In the vast majority of solutions, there are solution, and the solvent. It is a liquid (although solid solution is possible). The term mixture can also be used more generally to describe a system with more than one substance, under conditions that include approximately equal's amount, where no one substance can be considered the solvent. It is easiest to consider chemical species that have no charge (are not ions).

Ideal solutions:

The mole fraction of any substances in a liquid system is the equivalent variable to the partial pressure of a species in a gas, as in each case increasing this variable causes an increase in the number of molecules of the species per unit volume. That means that activity of a liquid is related to its mole fraction. An ideal solution of a mixture of two or more liquids, A and B, is one in which the interactions between similar pairs of molecules, A and B or A and B in a solution are same as in magnitude to those between the dissimilar molecules A and B. A good example is benzene and toluene, which are molecules with same shapes and sizes and have very similar interactions. In this case Raoult's law is obeyed, which is:

Non-ideal solutions:

Raoult's law only applies to a very few systems at all compositions. It is rare for the interactions between A and B to be exactly the same. That greatly complicates the situation for high concentrations of solute. For all solutions where the solute (B) is at a very low concentration. The entire surface consists of solvent the presence of molecules of B and molecules (A) affects only a small number of solvent molecules. In this case, the vast majority of A molecules interactions are with other A molecules, which means that Raoult's law applies to the solvent vapor. Solution under these conditions is called ideal solution. The chemical potential of the solvent in the liquid state is then given by

841_elecctrolytes.png 

Posted Date: 7/20/2012 4:04:13 AM | Location : United States







Related Discussions:- Non-electrolyte solutions, Assignment Help, Ask Question on Non-electrolyte solutions, Get Answer, Expert's Help, Non-electrolyte solutions Discussions

Write discussion on Non-electrolyte solutions
Your posts are moderated
Related Questions
Q. Explain about Atomic Radius? The atomic size decreases with increase in atomic number  along any period in the long form of the periodic table due to increase in effective n


240 g of water at 20 degree C are mixed with a sample of iron at 500 degree C. The final temperature of the system is 42 degree C. Find the mass of the iron sample

how to begin the topic of colloids for assignment?

Why are the lanthanides and actinides series call the f-block

How sodium carbonate can increase surface area of a catalyst


Explain the Need For Product Development In the present market scenario of processed foods we observe that sales profile of established brand names undergo unpredictable fluct

what are macroscopic properties ?

Q. Limitations of Hybrid orbitals? It gives no idea whether a particular metal ion would prefer to have any particular geometry say, an octahedral or tetrahedral with a giv