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首頁 > 研究所、轉學考(插大)◆普通化學 > 114年 - 114 國立臺灣大學_ 碩士班招生考試試題︰普通化學#125982 > 申論題

11. Label the functional group(s) present in the following molecule in English :

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12. Phenol (C6H5OH) and n-hexanol are both alcohols. However, phenol is much more acidic than hexanol. Explain.

13.Combustion analysis of 20.00 mg of an unknown compound containing only C, H, and O gives 49.23 mg CO2 and 12.96 mg H2O. The compound has a molecular mass of 250.3 g/mol. What is the probable molecular formula of the compound?

14. Ascorbic acid (H2C6H6O6) is a diprotic acid with and (A) What is the pH of a solution of 350.0 mg ascorbic acid in 500.0 mL water? Show your calculations. (5 pts) (B) Suppose 150.0 mL of 0.01000 M NaOH (aq) was added to the solution from (A). What would the pH of the resulting solution be? Show your calculations.

15. Radium-226 is a radioactive isotope that decays to form Radon-222 and an alpha particl(E) This process follows first-order kinetics, and the half-life of Radium-226 is 1600 years. Given a sample of 5.00 g of Radium-226, how many moles of Radon-222 would be present in the sample after two years?

16. A galvanic cell is made based on the following reaction: With relevant half reactions: If = 0.10 M, = 0.10 M, = 1.00 M, and Ecell = 3.02 V at 298 K, what is the pH of the cathode compartment?

b. What is the zero-point energy of 1H³5Cl?

b. Calculate the equilibrium pressure that result if 1.00 mole of A(g) at 1.00 atm and 1.00 mole of B(g) at 1.00 atm are mixed at 25°C. (e1.1 = 3.0, e2.1 = 8.2)

a. Calculate the frequency u (cm-¹) for ¹H35Cl from v-0 to v=1 (that means equal to v0), with its force constant is 4.80x102 J m². (1H=1.0078amu,35C1-34.9689amu, 1amu=1.627x10-27kg)

a. Assuming that = 8996 J/mol and = 11,718 J/mol, calculate the value of the equilibrium constant for this reaction.

2.Consider the following galvanic cell: Calculate the Ksp value for Ag2SO4(s). Note that to obtain silver ions in the right compartment (the cathode compartment), excess solid Ag2SO4 was added and some of the salt dissolved. (103.38~2400, 102.38~240, √7.5~2.7, √75~8.6)

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