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Tag: Weak base

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Does caffeine have a high pH? Unpacking the Chemistry of Coffee

6 min read
While many people associate the bitter, acidic taste of coffee with a high pH, a 1% aqueous solution of pure caffeine actually registers a slightly acidic, near-neutral pH of 6.9. The question, "Does caffeine have a high pH?", stems from a common misconception about the isolated molecule versus the complex beverage.