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111年 - 111 國立中山大學_碩士班暨碩士在職專班招生考試_化學系：物理化學及分析化學#126341
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6. A 0.0450 M solution of benzoic acid has a pH of 2.78. Calculate pKa for this acid. (10%)
相關申論題
1. The equation of state of a van der Waals gas is given as (P+) (V – b) = RT, where a, b, and R are constants. Derive the critical temperature Tc. (10%)
#536603
2. Find ＜Px＞, ＜Px²＞ for n=1 state of a particle in a 1D box with a length L. (10%)
#536604
3. What is the difference between the end point and equivalence point in a volumetric titration? (5%)How do you correct this "difference" in an acid-base titration? (5%)
#536605
(a) increasing ionic strength(3%);
#536606
(b) increasing ionic charge (3%);
#536607
(c) decreasing hydrated radius (3%). Which statements are true?
#536611
5. The concentration of the alkane C20H42 (molecular weight: 282.55) in a particular sample of rainwater is 0.2 ppb. Assume that the density of rainwater is close to 1.00 g/mL and find the molar concentration of C20H42. (10%)
#536608
7. Calculate the pH of 5.0 × 10-8 M HClO4.(7%) What fraction of the total H+ in this solution is derivedfrom the dissociation of water? (4%)
#536610
47 Compare the external calibration curve method with the method based on standard additions and explain which is more accurate.
#536516
46Fourier-transform infrared spectroscopy (FTIR) has several advantages over dispersive IR spectroscopy, including excellent spectral quality, high data collection speed, and high reproducibility. Explain why FT-IR has the above advantages
#536515
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