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CBSE Class 10 Answered

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"?
Asked by kinjal kinjal | 22 Aug, 2011, 03:56: PM
answered-by-expert Expert Answer
  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.
Answered by | 23 Aug, 2011, 04:50: AM

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