Experiment on Determination of Acidity of Water. скачать в хорошем качестве

Experiment on Determination of Acidity of Water.

Acidity of water is its quantitative capacity to react with a strong base to a designated pH. Acidity is the sum of all titrable acid present in the water sample. Strong mineral acids, weak acids such as carbonic, acetic acid present in the water sample contribute to acidity of the water. Usually dissolved carbon dioxide (CO2) is the major acidic component present in the unpolluted surface water. The volume of standard alkali required to titrate a specific volume of the sample to pH 8.3 is called phenolphthalein acidity (Total Acidity). The volume of standard alkali required to titrate a specific volume of the water sample (Waste water and highly polluted water) to pH 3.7 is called methyl orange acidity (Mineral Acidity). Acidity interferes in the treatment of water.