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Chemicals/pH/Buffer System

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Question
I am looking for an anti-buffer substance or chemical that when added to an aqueous mixture will destroy or remove the buffering effect. I did an aqueous product mixture of pH 11.5 to be reduced to pH of between 6.5 to 7.5 with citric acid before addition of a buffer. However, UREA(being used as buffer) was mistakenly added instead of citric acid. All effort at bringing the pH back to specification was to no avail. Is there any anti-buffer agent available. Thank you in anticipation. Sam Abiona

Answer
You were adding a buffer with citric acid also.  Citric acid is a well known buffer.  Buffers are resistant to acid or base.  Just keep adding a STRONG acid or base in the direction you want to go.  Note that this addition may cause you other problems depending on you system.  There is no way to debuffer a system.  You just overwhelm the buffer.

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Chemistry (non-biochemistry), environmental science, occupational health and safety, environmental regulation and management, environmental engineering, and wastewater engineering. I'm the Director of Environmental, Health, and Safety and the Director of Research at the Institute of Textile Technology.

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Chemistry (non-biochemistry), environmental science, occupational health and safety, environmental regulation and management, environmental engineering, and wastewater engineering. I'm the Director of Environmental, Health, and Safety and the Director of Research at the Institute of Textile Technology.

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