2045EG-Exam1A-Fall2007 no work

2045EG-Exam1A-Fall2007 no work - CHM 2045EG Fall 2007 Exam...

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CHM 2045EG Fall 2007 Exam 1 Form A Please bubble in your name, your 8-digit UFID, and the test form code on your scan-tron. 1. Sulfuric acid forms in the reaction: 2SO 2 + O 2 + 2H 2 O 2H 2 SO 4 . Suppose 400 g SO 2 , 175 g O 2 , and 125 g H 2 O are mixed and the reaction proceeds until one of the reactants is used up. The mass of H 2 SO 4 produced is closest to (A) 332 g (B) 612 g (C) 774 g (D) 836 g (E) 986 g 2. Hargreaves process, for making sodium sulfate, is used in the pulp and paper industry. The reactants are sodium chloride, sulfur dioxide, water, and oxygen. Along with sodium sulfate, hydrogen chloride also forms. Using whole number coefficients, the sum of all coefficients in the balanced reaction is (A) 10 (B) 11 (C) 12 (D) 14 (E) 15 3. A 60.00 g sample of a dry-cleaning fluid was analyzed and found to contain 10.80 g carbon, 1.36 g hydrogen, and 47.84 g chlorine. If the empirical formula is C x H y Cl z , what is the value of z ? (A) 1 (B) 2 (C) 3 (D) 4 (E) 6 4. In Fe 2 (SO 4 ) 3 , assign the oxidation number for sulfur. (A) +2 (B) +3 (C) +4 (D) +5 (E) +6 5. The H o f of NO(g) = 90.25 kJ/mol; H o f of NO 2 (g) = 33.18 kJ/mol; and H o f of O 2 (g) = 0 kJ/mol. The H o rxn for the reaction NO(g) + O 2 (g) NO 2 (g) (MUST BALANCE) is closest to (A) 114.14 kJ (B) 114.14 kJ (C) 246.50 kJ (D) 246.50 kJ (E) 57.07 kJ 6. Which of the following statements is false ? (A)
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This note was uploaded on 02/11/2010 for the course CHM 2045 taught by Professor Mitchell during the Fall '07 term at University of Florida.

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2045EG-Exam1A-Fall2007 no work - CHM 2045EG Fall 2007 Exam...

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