Acid-Base - Introduction One way to analyze solutions is to...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Introduction One way to analyze solutions is to measure the pH. Every solution has a pH, which by definition is the symbol used to express the acidity or alkalinity of the solution. It is measured on a scale from 1 to 14 where 7 is neutral, greater than 7 is basic, and less than 7 is acidic. When performing a titration experiment, using acids and bases can prove to be very helpful. Titration is a technique in which usually a fairly basic solution of known concentration is added quantitatively to a fairly acidic solution until the end-point is reached. An indicator is essential in order to determine when the end point has been reached and it is usually symbolized by a color change. At the endpoint, it is very convenient that the moles of acid solution are equivalent to the moles of basic solution. To begin the experiment, a 0.5 M solution of NaOH will need to be prepared and standardized. To standardize, a simple titration is required and when the end point is reached, the moles of primary standard used divided by the volume of NaOH added in L will result in a certain molarity. Next, the standardized NaOH will become the primary standard and will be used to determine the molarity of a prepared HCl solution. When both the NaOH and HCl solutions have been standardized, the analysis of antacids can be performed. An antacid is a substance that neutralizes acids. Two common antacids are Alka-
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/22/2008 for the course CHEM 104B taught by Professor Staff during the Spring '07 term at University of Arizona- Tucson.

Page1 / 3

Acid-Base - Introduction One way to analyze solutions is to...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online