36. What is the hybridization of the atoms designated in the H molecule shown? (

Question

36. What is the hybridization of the atoms designated in the H molecule shown? (0 (A) C(U) is sp; 0(2) is sp (B) C(I) is sp':0(2) is sp (C) q1) is 0(2) is sp, (D) q1) is sp":0(2) is sp2 37.Electrons in a polar covalent bond are (B) shared unequally (D) gained (A) shared equally. (C) lost Which bond is most polar? (A) Si-F (B) O-F (ONF (D) C-F Which molecule has a permanent dipole moment? (A) BF (B) CCL (C) CO (D) SO 38. 39. 40. Which pure substance has the highest boiling point? (A) CH,OH (C) CH (B) CH,CH OH (D) CH CH Which diagram best illustrates the behavior of the strong electrolyte HI in aqueous solution (water molecules not shown)? 41. 80 2. What is the molar concentration Molar Mass / g mo 74.55 ofa 3.50x10°mL solution that LRC1' contains 5.43 g of KC1? (A) 0.208 M (C) 4.81 M (B) 2.08 M (D) 15.5 M

Explanation / Answer

36. C) C - sp2 , O - sp3

37. Electrons in polar covalent bond are B) shared unequally

38. Most polar bond A) Si-F

39. Permanent dipole moment D) SO2

40. B) CH3CH2OH

41. C) Complete ionization

42. No. of moles of KCl = 5.43 g / 74.55 g/mol = 0.073 mol

molarity = 0.073 mol / 0.350 L = 0.208 M Option (A)

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