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Reply to "My asparagus water turned pink"
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[quote=Anonymous]Found on Reddit: Asparagus contains a natural pH indicator, as do many other plants (red cabbage makes a good one). Lemon juice is acidic, so adding it changes the colour. That article has some general explanation on how they work; the basic idea (let's see how much chemistry I remember) is that you have an equilibrium reaction with the balance depending on the pH of the environment, and if the two sides of the reaction are different colours, one colour or the other dominates depending on the pH.[/quote]
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