water quality (1 Viewer)

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Identify the main organisms whose presence indicates contamination in this catchment????
 
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identify effect on pH of adding limewater to acidic water. write equation and name process involved.
 

Undermyskin

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Organisms. E.Coli (Escherichia Coli). This type of organism is present in ALL animals' intestinal tracts and hence faeces (yuk!). By detecting its presence, you can assure the water is contaminated by sewage.

This increases the pH of water.

OH- + H3O+ <--> 2 H2O (l)
 

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