Download Chem111 Exam 2: Inorganic Chemistry Questions and more Exams Chemistry in PDF only on Docsity!
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- (8 points) Name the following compounds using the correct systematic method (a) H 2 SO 3
(b) N 2 O 5
(c) PCl (^3)
(d) HNO 3
- (10 points) Nicotine, contains 74.30% C, 8.70%, H and 17.27% N by mass. What is the empirical formula of nicotine?
- (8 points) 100.0 mL of an 18.0 M solution of H 2 SO 4 is transferred to a volumetric flask and diluted to 250.0 mL. What is the concentration of the new solution?
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- (12 points) The thermite reaction, used to weld rails together in the building of railroads is described by the following equation: Fe 2 O 3 (s) + 3 Al(s) → Al 2 O 3 (s) + 2 Fe(l) (a) How many grams of iron metal are produced if 150.0 g of aluminum metal is reacted with 250.0 g iron(III) oxide?
(b) What is the percent yield of the reaction in part a if 152.3 g of iron metal was produced by the reaction.
- (10 points) How many grams are needed to prepare 250.0 mL of a 0.200 M sucrose (C 12 H 22 O 11 ) solution?
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- (6 points) In the following reaction: CuCl 2 (aq) + Zn(s) → ZnCl 2 (s) +Cu(s)
(a) identify the species being oxidized
(b) identify the reducing agent
- (5 points) Given the following data: 2 H 2 O 2 (l) → O 2 (g) + H 2 O(l) ΔH = -196 kJ
Calculate ΔH for the following reaction: H 2 O(l) + ½ O 2 (g) → H 2 O 2 (l)
- (12 points) Top fuel dragsters and funny cars burn nitromethane as fuel according to the following combustion equation: 2 CH 3 NO 2 (l) + 3/2 O 2 (g) → 2 CO 2 (g) + 3 H 2 O(g) + N 2 (g) Calculate ΔHo^ for this reaction.
Substance (^) ΔH°f (kJ/mol) CH 3 NO 2 (l) -401. H 2 O(l) - H 2 O(g) - CO(g) -110. CO 2 (g) -393.
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