Citric acid (H3CH₂O7) has pK₁ values of 3.128 (pKal), 4.761 (pKa2), and 6.396 (pKa3). What is the predominant form of citric acid at pH 4.37? HC HẠO OH₂CH₂O, OCH,0²- H₂CH₂O7 What is the second most abundant species of citric acid at pH 4.37? O HC HẠO О с н о - OH₂CH₂O7 OH₂CH₂O7 What is the predominant form of citric acid at pH 5.95? O HC,H,O H₂ C₂H₂O₂ H₂CH₂O7 OCH,0²- What is the second most abundant species of citric acid at pH 5.95? O HC,H,O OC,H,O O H,CH,O, H₂CH₂O7

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