Buffer solution to maintain a constant alkalinity

Buffer solution to maintain a constant alkalinity

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Caption: Buffer solution. Bottle containing a buffer solution for maintaining a constant alkalinity. At right is a piece of litmus paper which has turned blue after being dipped in the buffer, showing that it is alkaline. This buffer solution has been made by mixing a weak alkali with the salt that the alkali forms when it reacts with a strong acid. This mixture resists changes in its alkalin- ity (pH). If a strong alkaline is added, then it will react with the salt to form its own salt. If an acid is added it will react with the weak alkali; the lost alkali will be largely replaced as the salt dissociates. The solution loses its buffering abilities as the salt is depleted.

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Keywords: alkaline, alkaline buffer solution, alkalinity test, apparatus, buffer solution, buffer soluton, chemical, chemistry, equipment, industry, litmus paper, technology

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