A student dipped ph paper in rain water. what would be the colour of the ph paper.?
gaurav390:
it depends on place if it is away from pollutant gases then there is no change in ph paper as rain water has ph value 7
Ya that's what I want to say.
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Red is the colour of the pH paper when dipped in rainwater due to the following reasons:
- The rain water is acidic in nature due to the presence of pollutants gases in the atmosphere.
- The pH paper shows red colour in case of acid.
- The pH of rainwater would be around 5 to 5.5 that can be magnified due to dissolution of acidic industrial chemicals in to rain.
- The reason for the acidic nature of rainwater is due to the dissolution of sulphur dioxide, carbon dioxide nitrogen oxide pollution in the atmosphere.
- Sometimes pH of rainwater reaches around 4.0 due to bad pollution.
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