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11-04-2024
Chemistry

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Review the three different pKₐ values for the phosphate system. Which pair of reagents would be the best choice to start with in order to make a buffer with a pH of 3.0?

1. NaH₂PO₄ and Na₂HPO₄
2. Na₂HPO₄ and Na₃PO₄
3. H₃PO₄ and NaH₂PO₄
4. H₃PO₄ and Na₃PO₄"

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