Exam Review Questions-3U-June2011 - Savita Pall and Chemistry

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49. For a substance that remains a gas under the conditions listed, deviation from the ideal gas law would be most pronounced at : a) 100 0 C and 2.0 atm b) 0 0 C and 2.0 atm c) - 100 0 C and 2.0 atm d) - 100 0 C and 4.0 atm 50. Given the following equation: CaCO 3(s) + 2 HCl (g) ssssd CaCl 2(aq) + H 2 O (l) + CO 2(g) How many moles of CaCl 2 would one obtain by making 112 L of CO 2 at O 0 C and 101.3 kPa ? a) 0.200 mol b) 4.68 mol c) 5.00 mol d) 112 mol 51. What is the correct name of SnSO 3 ? a) tin (II) sulphite b) tin (IV) sulphite c) stannic sulphite d) stannic sulphate e) tin (II) sulphate 52. Which of the following is an example of correct Lewis structure? 53. What is the correct name of Pb(OH) 2 C 6H 2 O ? a. Lead (II) hydroxide heptahydrate b. Lead (II) hydroxide hexahydtare c. Plumbous hydroxide hydrate d. Lead (IV) hydroxide hydrate 54. 50.0 mL of 0.125 M sulphuric acid solution ( H 2 SO 4(aq) ) is diluted with water to 1.00 L. The molar concentration of hydrogen ion, H + (aq) in the diluted solution is: a) 0.00625 M b) 0.0125 M c) 0.125 M d) 0.250 M e) 6.25 M 55. The first four ionization energies of an element X are : 740 kJ mol -1 , 1450 kJ mol -1 , 7730 kJ mol -1 , 10 470 kJ mol -1 The formula for the stable ion of X is most likely to be: a) X + b) X 2+ c) X 3+ d) X 4+ 56. Atoms of the different isotopes of the same element are identical in the: a) number of electrons b) sum of number of protons and neutrons c) sum of the number of protons and neutrons d) mass number 57. The elements X and Y have 6 and7 electrons respectively, in the highest energy levels of their atoms. What is the formula and type of bonding used in a compound formed by these elements? a) XY 2 , ionic b) X 2 Y, ionic c) X 2 Y, covalent d) XY 2 , covalent 6
58. In the periodic table, the elements are arranged in order of increasing: a) Number of neutrons b) Number of protons c) Ionization energy d) Electronegativity 59. Which of the following molecules has a pyramidal shape ? (a) NF 3 (b) H 2 S (c) CCI 4 (d) CO 2 60. Which one of the following covalent bonds is the most polar? A. H– O B. H– N C. H– Cl D. H– F 61. Which change in conditions would increase the volume of a fixed mass of gas? Pressure /kPa Temperature /K A. Doubled Doubled B. Halved Halved C. Doubled Halved D. Halved Doubled 62. Which is a conjugate acid-base pair in the following reaction? HNO 3 + H 2 SO 4 qwwwwe H 2 NO 3 + + HSO 4 – A. HNO 3 and H 2 SO 4 B. HNO 3 and H 2 NO 3 + C. HNO 3 and HSO 4 – D. H 2 NO 3 + and HSO 4 – 63. Which methods can distinguish between solutions of a strong monoprotic acid and a weak monoprotic acid of the same concentration? I. Add magnesium to each solution and measure the rate of the formation of gas bubbles. II. III. Add pH paper and measure the pH change Use each solution in a circuit with a battery and lamp and see how bright the lamp glows. A. I and II only B. I and III only C. II and III only D. I, II and III 64. According to the Bronsted-Lowry theory, the conceptual definition of an acid is any substance that ________. (A) Conducts electricity. (B) Reacts with Zn to liberate H2(g). (C) Gives up protons. (D) Turns litmus red. 7
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Exam Review Questions-3U-June2011 - Savita Pall and Chemistry

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