Transcription of pH and Acid Base Indicators - Yosemite Community College ...
{{id}} {{{paragraph}}}
Example: barber
pH and Acid Base Indicators - Yosemite Community College ...
PH and acid base Indicators Page 1 pH and acid base Indicators Problem and Purpose: In this experiment you will learn to use both common Indicators and pH paper, assess their efficacy and test the pH of both common household substances and prepared buffered solutions . Subsequently, you will investigate the pH behavior of these substances as well as some weak bases. Introduction: An acid base indicator is a substance that changes color as the pH of a solution changes. [see pages 310 and 311 in your textbook]. There are countless numbers of different acid base Indicators , many of which can be extracted from common plants. Every indicator exhibits a different range of colors at different pH values. For example, the indicator phenolpthalein, which you used in the week 5 lab Titration , is colorless in solutions with a pH less than 8 and pink to deep red in solutions with a pH greater than 8.
and blue in basic solutions. Of course, an indicator can be used to judge the pH of a solution only if the characteristic colors at various pH’s are previously known.
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: