Chemistry 1210 Final A December 9, 2002 Dr. B. Jackson

51. Code A

52. An increase in temperature will generally __________ the amount of gas dissolved in a liquid.

a) increase b) decrease

53. What is the percent concentration (m/v) if 20 grams of NaCl (MW 58.5) were brought up to

a 250 mL volume with water?

a) 20% b) 10% c) 8% d) 34%

54. What volume of a 30% solution of NaOH (MW 40) would contain 4 grams of NaOH?

a) 13.3 mL b) 120 mL c) 10 mL d) 12 mL

55. What is the molarity of a solution which has 10 grams of NaOH (MW 40) in 100 mL of

solution?

a) 10 M b) 4 M c) 2.5 M d) 25 M e) 0.25 M

56. What is the osmolarity of 29.25 grams of NaCl (MW 58.5) in 1 liter of solution?

a) 1 osmol b) 0.1 osmol c) 0.05 osmol d) 0.5 osmol

57. How many milligrams are present in 50 mL of a 5 mg% solution?

a) 2.5 b) 0.25 c) 5 d) 10

58. 0.6 N H3(PO4) is __M H3(PO4)

a) 0.3 b) 0.2 c) 0.6 d) 1.2 e) 1.8

59. How many milliequivalents are present in 20 mL of a 2 M H2(SO4)?

a) 40 b) 80 c) 10 d) 0.1

60. How many milliliters of a 2 N NaOH solution are required to neutralize 40 milliequivalents of H+?

a) 80 b) 40 c) 20 d) 10 e) not enough information given

61. How many milliliters of concentrated HCl (12N) would be needed to make up 500 mL of a

1.2 N solution?

a) 5 b) 50 c) 10 d) 25 e) not enough information given

62. How many grams of H2(SO4) (MW 98) are present in 50 mL of a 0.5 N solution?

a) 1.23 b) 9.8 c) 12.5 d) 5

63. Given N2 + 2 O2 <------> 2 NO2

[N2] = 3.3 mol/L [O2] = 4.7 mol/L [NO2] = 0.067 mol/L

What is the Keq ?

a) 4.3 x 10-3 b) 6.2 x 10-5 c) 4.3 x 103 d) 6.2 x 10-3

64. What is the pH of a solution with a pOH of 5?

a) 5 b) 9 c) 1 x 10-5 d) 1 x 10-9

65. A solution has a pH of 3. What is the hydrogen ion concentration?

a) 1 x 10-3 M b) 3 x 10-3 M c) 0.003 M

66. What is the pH of a 0.005 M HCl?

a) 3 b) 5 c) 2.3 d) 11.7

67. What is the pH of a 0.00006 M NaOH?

a) 4.2 b) 9.8 c) 5 d) 6

68. What is the [OH-] of a solution with a pH of 6.2?

a) 6.31 x 10-7 b) 1.58 x 106 c) 7.8 d) 1.58 x 10-8

69 - 72 To which class of organic compounds do the following belong? Use the following answers a) alcohol b) aldehyde c) acid d) ketone e) ester

 

H

|

69. H3C-C-C=O

C

|

70. H3C-C-C=O

 

H

|

71. H3C-C-C-OH

|

H

OH

|

72. H3C-C-C=O

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73. When NAD -------> NADH*H, this is an example of

a) oxidation b) reduction

74. When 3 fatty acids are reacted with glycerol, 1 molecule of a triglyceride is formed. What

class of organic compounds does the triglyceride belong?

a) alcohol b) aldehyde c) acid d) ketone e) ester

75. ω refers to the location of the double bonds in fatty acids counting from the ____end.

a) methyl b) acid

76. Deoxyribose is

a) 5 carbon ketose b) 5 carbon aldose c) 6 carbon ketose d) 6 carbon aldose

77. Testosterone is synthesized from

a) arachidonic acid b) phospholipids c) cholesterol

78 - 80 Use the following answers

a) nucleus b) mitochondria c) cytoplasm d) donuts e) endoplasmic reticulum

78. Site of protein synthesis

79. Site of Citric Acid Cycle

80. Site of fatty acid synthesis

________________________________________________________________________

81. Which of the following sugars has another monosaccharide other than glucose?

a) amylose b) maltose c) cellulose d) glycogen e) sucrose

82. Which of the following disaccharides has a β linkage between the monosaccharides?

a) maltose b) sucrose c) lactose

Ans: 51a; 52b; 53c; 54a; 55c; 56a; 57a; 58b; 59b; 60c; 61b; 62a; 63b; 64b; 65a; 66c; 67b; 68d; 69b; 70d; 71a; 72c; 73b; 74e; 75a; 76b; 77c; 78e; 79b; 80c; 81e; 82c

 

Wednesday, March 21, 2007 01:28:02 PM