# L28 - Solutions A solution is a homogeneous mixture. It...

This preview shows pages 1–6. Sign up to view the full content.

Solutions A solution is a homogeneous mixture. It consists of two ``parts’’: Solute - the smaller amount of substance Solvent - the larger amount of substance In this class we talk almost exclusively about aqueous  solutions (i.e. solvent = water)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Concentration The amount of solute per unit solution
Molarity Solution =  solute  dissolved in  solven t. Solute: present in smallest amount. In this class: water as solvent =  aqueous  solutions. Concentration:  measure of the amount of solute present in a unit  of solution. Concentration can be specified in different units. In this  class we use units of  Molarity (M) . Molarity: moles of solute per liter of solution. Important feature of molarity: what counts is the solution volume,  NOT the solvent volume. Solution Concentration g

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Laboratory preparation of molar solutions. Figure 3.12 A    Weigh the solid needed. Transfer the solid to a  volumetric flask that contains  about half the final volume of  solvent. B    Dissolve the solid  thoroughly by swirling. C    Add solvent until the solution  reaches its final volume.
Sample Problem 3.13 Calculating the Molarity of a Solution PROBLEM: Glycine (H 2 NCH 2 COOH) is the simplest amino acid.  What is the  molarity of an aqueous solution that contains 0.715 mol of glycine in  495 mL? mol of glycine  concentration(mol/mL) glycine  molarity(mol/L) glycine SOLUTION: PLAN: Molarity is the number of moles of solute per liter of solution. 0.715 mol glycine

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 04/20/2008 for the course CHEM 111 taught by Professor Grzegorz during the Spring '08 term at Colorado State.

### Page1 / 12

L28 - Solutions A solution is a homogeneous mixture. It...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online