- #31
Yiwei Zhou
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So, does the concentration of citric acid in a lemon change over time under standard temperature and pressure? If so, why?
Does Citric acid decompose in a lemon over time?
- Thread starter iambadatscience
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- Acid citric Citric acid Time
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The discussion centers on an experiment measuring citric acid concentration in lemons over 25 days using titration with sodium hydroxide. The independent variable is time, and initial results show a stable citric acid concentration for the first 15 days, followed by a slight decrease by day 20. Participants highlight the biochemical processes involved in lemon degradation, including the citric acid cycle and the impact of environmental conditions like temperature and humidity on citric acid stability. Concerns are raised about the specificity of titration as a measurement method due to the presence of other acids and compounds in lemon juice. Suggestions include conducting preliminary trials with multiple lemons to account for variability and exploring more specific enzymatic methods for measuring citric acid. The conversation also touches on the effects of temperature on citric acid degradation, emphasizing that extreme heat can denature enzymes and disrupt biochemical processes. Overall, the experiment aims to understand how citric acid concentration changes in lemons over time and the factors influencing this change.
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