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110年 - 110 國立中山大學碩士暨碩士專班招生考試_化學系碩士班:物理化學及分析化學#106071
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34. (4%) We have different mass analyzers, including time-of-flight, triple-quadrupole, and linear ion trap. When we use each of them?
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(a)
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(b)
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32. (10%) The activation energy Eacan be defined from the Arrhenius expression asUse the equation k(T) = to show that
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33. (4%) Standard addition is especially appropriate when matrix effect present. Explain how the analytical signal is affected by matrix effect. And, What is the most important assumption in the standard addition method?
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35. (4%) Describe the working principle of Fluoride ion-selective electrode.
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36. (4%) Describe the variables that cause the band broadening in gas chromatography, high-performance chromatography, and capillary electrophoresis.
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37. (4%) For CO2, all vibrational modes that are Raman active are IR inactive and vice-versa. For N2O, the vibrational modes are both Raman and infrared active. What is the effect of such a phenomenon?
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(c) decreasing hydrated radius (3%). Which statements are true?
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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%)
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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%)
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