-OCH3 SQ. Identify the major product of the following reaction. E D 0 KOH, H20 / THF D MeO2C heat Product(s) meor Danny H optically pure oubor (single enantiomer) H sen H H D (A) (B) (C) Dhey H act wondo wybo Badoo HM Hi and H (D) and H Dimny H D." H
6.) Rank the following compounds in order of decreasing (highest to lowest) dipole moment. H H H III A) I>II>III B) II/III>I C) I>III>II D) III>II>I E) II>I>III
28. Which one of the following will have the greatest number of unpaired electrons ? A. B. C. [Mn(H2O).]2+ (weak field) [Fe(en)3]3+ (strong field) [Ru(NH3).]?* (strong field) (Cr(CI).]*- (weak field) [Fe(en)3]** (strong field) D. E.
Rg = 10M2 圖 E64 習題6-27 28 , 6-28 若上題中,改用 Vascoff) = -4.5 V · Ipss = 9 mA Z MOSFET 求其偏壓值 Ipo 和 VpsQ = o - 6-29 如圖 E6-5 所示,若MOSFE 之Vestoji) = -3 V, Ipss = 6 m4。 試求ID、Les 和Ins。
37. A sodium salt (NaHA, 4.1 mole) is dissolved in 1.0 L water. The solution's pH is 5.0 after some acid or base is added in the solution. What is the concentration of HA at pH 5.0 if the Kai and Ka2 of H2A are 1 x 109 and 5 x 10-?, respectively? A) 0.1 M; B) 0.2 M; C) 0.5 M; D) 1.0 M; E) 2.0 M 38. Continued from the previous question. What is the concentration of A2- A) 0.1 M; B) 0.2 M; C) 0.5 M; D) 1.0 M; E) 2.0 M
Ans: D Category: Difficult Section: 16.5 hoo . 106. What is the pH of a solution prepared by mixing 50.0 mL of 0.300 M HCl with 450.0 mL) of 0.400 M HIO3? [K (HIO3) = 1.6 x 10-1 k= [CcHsCod ][CH3 C00H] A) 1.52 B) 0.80 C) 0.72 D) 0.89 E) 0.66 = 2.b [CH3C00-][ C6H-C001] Ans: D Category: Difficult Section: 16.5 CH₃COOH + H₂C00 (o
44. Which one of the following reagents is capable of transforming Cu(s) to Cuf* (1 M)? A) I (1M) B) Ni(s) C) Ag" (1 M) D) AP* (1 M) E) Hf (1 M) Ans: C Category: Medium Section: 19.3 45. Which one of the following reagents is capable of transforming Fe3+ (1 M) to Fe2+ (1 M)?
-> 3. = The element oxygen was prepared by heating mero ercury(II) oxide: HgO(s) Hg(1) + (1/2)O2(g), AH 90.84 kJ/mol. Estimate the temperature at which this reaction will become spontaneous under standard state conditions. The entropies of Hg, O2 and HgO are 76.02, 205.0 and 70.29 J/Kºmol, respectively. (A) 108 K, (B) 430 K, (C) 620 K, (D) 775 K, (E) 840 K.
