Ch5 Example Problems

Ch5 Example Problems - a) Basic b) Neutral c) Acidic d)...

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HODSON CHE 1301 Petrucci Ch5 Example Problems The following problems are taken from old exams . ..... 1) What is the concentration of Br (aq) in a solution prepared by mixing 75.0 mL of 0.62 M iron(III) bromide with 75.0 mL of water? Assume volumes are additive. a) 0.31 M b) 1.9 M c) 0.93 M d) 0.62 M 2) Which of the following pairs of aqueous solutions will give a precipitate when mixed? a) K 3 PO 4 and CaCl 2 b) LiClO 4 and Ba(OH) 2 c) NaCl and Hg(CH 3 COO) 2 c) AgNO 3 and Ca(ClO 4 ) 2 3) In which of the following pairs is the oxidation number for the underlined element INCORRECT? a) Mn O 2 / 4 b) Cr 2 O 3 / 3 c) S O 3 2– / 4 c) Cl O 3– / 7 e) N O 2– / 3 4) Which of the following reactions is an oxidation-reduction reaction? a) 2 CH 3 COOH (aq) + Ba(OH) 2(aq) → Ba(CH 3 COO) 2(aq) + 2 H 2 O (l) b) 2 NaHCO 3(s) → Na 2 CO 3(s) + H 2 O (g) + CO 2(g) c) NH 4 HS (s) → NH 3(g) + H 2 S (g) d) N 2 O 4(g) → 2 NO 2(g) e) 2 SO 2(g) + O 2(g) → 2 SO 3(g) 5) 12.5 mL of 0.280 M HNO3 and 5.0 mL of 0.920 M KOH are mixed. Is the resulting solution acidic, basic or neutral?
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Unformatted text preview: a) Basic b) Neutral c) Acidic d) None of these e) HNO 3 and KOH do not mix 6) The substance NaOH in water solution is a: a) Weak Electrolyte b) Non-Electrolyte c) Strong Electrolyte d) Weak acid e) Weak Base 7) Write the net ionic equation for the reaction of lead(II) nitrate and sodium iodide. a) Pb 2+ + 2 NaI (aq) → PbI 2(s) + 2 Na b) Pb 2+ + 2 I – → Pb 2+ + 2 I – c) Pb(NO 3 ) 2(aq) + 2 NaI (aq) → PbI 2(s) + 2 NaNO 3(aq) d) Pb 2+ + 2 I – → PbI 2(s) e) No reaction 8) When the following equation is completed and balanced for the reaction in acidic solution, what is the proper coefficient for H + ? Zn (s) + Cr 2 O 7 2– (aq) → Zn 2+ (aq) + Cr 2+ (aq) a) 18 b)14 c) 11 d) 22 e) 7 9) Identify the reducing agent in the following reaction: 2 NO 2(g) + 7 H 2(g) → 2 NH 3(g) + 4 H 2 O (g) a) H 2 O b) NH 3 c) NO 2 d)H 2 e) there is no reducing agent...
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This note was uploaded on 12/18/2009 for the course CHE 1301 taught by Professor Klausmeyer during the Spring '08 term at Baylor.

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Ch5 Example Problems - a) Basic b) Neutral c) Acidic d)...

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