web quiz 3

web quiz 3 - Question # 7 Given the reaction 2MnO 4-+ 5H 2...

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Question # 1 What volume of 0.25 M HNO 3 is necessary to react exactly with 7.4 g of Ca(OH) 2 ? A. 2.0 x 10 2 mL B. 2.5 x 10 2 mL C. 4.0 x 10 2 mL D. 8.0 x 10 2 mL E. 1.2 x 10 2 mL Question # 2 Which of the following is a strong acid? A. HF B. KOH C. HClO 4 D. HClO E. HBrO Question # 3 Which of the following is not a strong base? A. Ca(OH) 2 B. KOH C. NH 3 D. LiOH E. Sr(OH) 2 Question # 4 The following reaction occurs in aqueous acid solution: NO 3 - + I - IO 3 - + NO 2 In the balanced equation the coefficient of NO 3 - is:
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A. 2 B. 3 C. 4 D. 5 E. 6 Question # 5 When the equation Cl 2 Cl - + ClO 3 - (basic solution) is balanced using the smallest whole-number coefficients, the coefficient of OH - is: A. 1 B. 2 C. 3 D. 4 E. 6 Question # 6 The following equation describes the oxidation of ethanol to acetic acid by potassium permanganate: 3C 2 H 5 OH + 4KMnO 4 3HC 2 H 3 O 2 + 4MnO 2 + 4KOH + H 2 O 5.0 g of ethanol and an excess of aqueous KMnO 4 are reacted, and 5.9 g HC 2 H 3 O 2 result. What is the percent yield? A. 100% B. 91% C. 67% D. 30% E. 5.9 g HC 2 H 3 O 2 is impossible since it represents more than a 100% yield.
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Unformatted text preview: Question # 7 Given the reaction 2MnO 4-+ 5H 2 O 2 + 6H + 2Mn 2+ + 8H 2 O + 5O 2 determine the number of electrons involved in this reaction. A. 10 B. 8 C. 6 D. 4 E. 2 Question # 8 The following reactions: Pb 2+ + 2I-PbI 2 2Ce 4+ + 2I-I 2 + 2Ce 3+ HOAc + NH 3 NH 4 + + OAc-are examples of A. acid-base reactions. B. unbalanced reactions. C. precipitation, acid-base, and redox reactions, respectively. D. redox, acid-base, and precipitation reactions, respectively. E. precipitation, redox, and acid-base reactions, respectively. Question # 9 How many grams of solute are contained in 141 mL of a 0.175 M silver nitrate solution? A. 6.85 g B. 3.80 g C. 0.145 g D. 4.19 g Question # 10 If a student needs to make a 0.10 M solution of NaHCO 3 , how many mL of solution can be made using a 0.35-g sample of NaHCO 3 ? A. 3.5 mL B. 4.2 mL C. 35 mL D. 42 mL E. 1.0 x 10 2 mL...
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This note was uploaded on 10/25/2010 for the course CHEM 105ALg taught by Professor Bau during the Spring '07 term at USC.

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web quiz 3 - Question # 7 Given the reaction 2MnO 4-+ 5H 2...

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