Question
Mon August 22, 2011 By: Kinjal Kinjal
 

1)name the colours in ph scale from 0 to 14(for example 0 -red and.........) 2)what do understand by "generally paper impregnated with the universal indicator is used for measuring ph"?

Expert Reply
Tue August 23, 2011
  1. The acid or base solution doesn"t show any colour in the absence of suitable indicator.So the PH scale doesn't possess any colour.It is the indicator which is responsible for the colour.
  2. Universal indicator consists of a mixture of indicators such that there is a continuous color change from about pH 2 to pH 10. Universal indicator paper is simple paper that has been impregnated with universal indicator.
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