Unit 4 Study Guide - Chemistry II Honors Unit 4 Study Guide...

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Chemistry II Honors Unit 4 Study Guide 1. An unknown substance dissolves readily in water but not in benzene (a nonpolar solvent). Molecules of what type are present in the substance? A) neither polar nor nonpolar B) polar C) either polar or nonpolar D) nonpolar E) none of these 2. A 13.0-g sample of HF is dissolved in water to give 2.0 × 10 2 mL of solution. The concentration of the solution is: A) 0.65 M B) 0.13 M C) 0.07 M D) 3.2 M E) 6.5 M 3. 1.00 mL of a 3.50 × 10 –4 M solution of oleic acid is diluted with 9.00 mL of petroleum ether, forming solution A. 2.00 mL of solution A is diluted with 8.00 mL of petroleum ether, forming solution B. How many grams of oleic acid are 5.00 mL of solution B? (molar mass for oleic acid = 282 g/mol) A) 4.94 × 10 –4 g B) 7.00 × 10 –6 g C) 4.94 × 10 –5 g D) 1.97 × 10 –6 g E) 9.87 × 10 –6 g 4. How many grams of NaCl are contained in 350. mL of a 0.423 M solution of sodium chloride? A) 24.7 g B) 8.65 g C) 17.30 g D) 148.1 g E) none of these 5. Which of the following aqueous solutions contains the greatest number of ions? A) 400.0 mL of 0.10 M NaCl B) 300.0 mL of 0.10 M CaCl 2 C) 200.0 mL of 0.10 M FeCl 3 D) 200.0 mL of 0.10 M KBr E) 800.0 mL of 0.10 M sucrose 6. What mass of calcium chloride, CaCl 2 , is needed to prepare 2.309 L of a 1.56 M solution? A) 164 g B) 3.60 g C) 75.0 g D) 111 g E) 400 g 7. A 76.7-g sample of SrCl 2 is dissolved in 112.5 mL of solution. Calculate the molarity of this solution. A) 54.4 M B) 4.30 M C) 108.1 M D) 2.07 M E) none of these 8. What mass of solute is contained in 256 mL of a 0.879 M ammonium chloride solution? A) 12.0 g B) 184 g C) 15.6 g D) 225 g E) none of these 9. A 51.24-g sample of Ba(OH) 2 is dissolved in enough water to make 2.333 liters of solution. How many mL of this solution must be diluted with water in order to make 1.000 liter of 0.1000 molar Ba(OH) 2 ? A) 780 mL B) 128 mL C) 12.8 mL D) 42.9 mL E) 171 mL 10. What volume of 18.0 M sulfuric acid must be used to prepare 11.3 L of 0.195 M H 2 SO 4 ? (Ignore significant figures in this problem.) A) 122 mL B) 2.20 mL C) 311 mL D) 5.71 mL E) 3.51 mL 11. How many grams of NaOH are contained in 5.0 × 10 2 mL of a 0.85 M sodium hydroxide solution? A) 17 g B) 85 g C) 0.43 g D) 34 g E) 4.3e2 g 12. A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning the solution is 1.59 M. What volume of solvent has evaporated from the 0.275 M solution? A) 39.8 mL B) 63.3 mL C) 190.2 mL D) 230. mL E) 269.8 mL Page 1
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13. The net ionic equation for the reaction of aluminum sulfate and sodium hydroxide contains which of the following species? A) 3Al 3+ (aq) B) OH (aq) C) 3OH (aq) D) 2Al 3+ (aq) E) 2Al(OH) 3 (s) 14. The net ionic equation for the reaction of calcium bromide and sodium phosphate contains which of the following species? A)
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This note was uploaded on 01/15/2012 for the course CHEM 101 taught by Professor Curtis during the Spring '11 term at Austin Community College.

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Unit 4 Study Guide - Chemistry II Honors Unit 4 Study Guide...

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