16. A 1.37 M solution of citric acid (H₃C₆H₅O₇) in water has a density of 1.10 g/cm³. Calculate the mole fraction of the citric acid. Citric acid has three acidic protons.
(A) 0.056
(B) 0.0035
(C) 0.084
(D) 0.0093
(E) 0.028

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統計： A(2), B(1), C(1), D(1), E(2) #3297735

cute_shiba

B1 · 2025/04/09

#6364537

單位換算

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Citric acid：192 g/mol × 1.37 mol/L= 263 g/L

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溶液：1.10 g/cm³ = 1100 g/L

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剩下的水：1100 g/L - 263 g/L = 837 g/L，換算莫耳濃度 837/18 mol/L

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Mole分率：

1.37mol/L

----------------------------- = 0.028

1.37 mol/L+ 837/18 mol/L

16. A 1.37 M solution of citric acid (H3C6H5O7) in water has a density of 1.10 g/cm3. Calculate the mole fraction of the citric acid. Citric acid has three acidic protons. (A) 0.056 (B) 0.0035 (C) 0.084 (D) 0.0093 (E) 0.028