Acids, Bases and Salts 2



Acids, Bases, and Salts 2

Performance Objectives

The student should be able to:

  1. Explain the concept of the PH scale
  2. Define deliquescent, efflorescent and hygroscopic substances.


Measurement of acidity and alkalinity (pH scale)

The pH scale is numbered from 0-14 is used to measure the degree of acidity and alkalinity of a solution. The term pH denotes hydrogen ion concentration. The pH of a solution can be measured with a pH meter or by the use of a universal indicator. A universal indicator is made up of a mixture of various indicators that works at different pH ranges.

A solution with a pH value of 7 is neutral i.e neither acidic nor alkaline..... View More

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