2010 Spring Chemical Equations Worksheet - Key

2010 Spring Chemical Equations Worksheet - Key - CHEMICAL...

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CHEMICAL EQUATIONS WORKSHEET – ANSWER KEY GENERAL CHEMISTRY PAGE 1 OF 6 1. Write a balanced chemical equation that describes each reaction: (a) The combustion of liquid pentane (C 5 H 12 ) with excess oxygen gas C 5 H 12 (l) + O 2 (g) (excess) CO 2 (g) + H 2 O (g) C 5 H 12 (l) + 8O 2 (g) (excess) 5CO 2 (g) + 6H 2 O (g) (b) The combustion of liquid pentane (C 5 H 12 ) with a limited amount of oxygen gas C 5 H 12 (l) + O 2 (g) (limited) CO (g) + H 2 O (g) C 5 H 12 (l) + 11/2 O 2 (g) (limited) 5CO (g) + 6H 2 O (g) Multiply entire equation x 2 2C 5 H 12 (l) + 11O 2 (g) (limited) 10CO (g) + 12H 2 O (g) (c) Mercury I ions, Hg 2 2+ can be removed from solution by precipitation with chloride ion. Suppose that a solution contains aqueous mercury (I) nitrate. Write a complete equation to show the removal of mercury I by adding aqueous sodium chloride. Write a net ionic equation for this reaction. Hg 2 (NO 3 ) 2 (aq) + NaCl (aq) Hg 2 Cl 2 (s) + NaNO 3 (aq) Hg 2 (NO 3 ) 2 (aq) + 2NaCl (aq) Hg 2 Cl 2 (s) + 2NaNO 3 (aq) Complete Equation Hg 2 2+ (aq) + 2Cl - (aq) Hg 2 Cl 2 (s) Net Ionic Equation (d) Complete combustion of carbon disulfide gas CS 2 (g) + O 2 (g) (excess) CO 2 (g) + SO 2 (g) CS 2 (g) + 3O 2 (g) (excess) CO 2 (g) + 2SO 2 (g) (e) Lithium sulfate with and lead (II) acetate Li 2 SO 4 (aq) + Pb(C 2 H 3 O 2 ) 2 (aq) PbSO 4 (s) + LiC 2 H 3 O 2 (aq) Li 2 SO 4 (aq) + Pb(C 2 H 3 O 2 ) 2 (aq) PbSO 4 (s) + 2LiC 2 H 3 O 2 (aq) (f) The reaction of chloric acid with aqueous ammonia HClO 3 (aq) + NH 4 OH (aq) HOH (l) + NH 4 ClO 3 (aq) (g) The displacement of chlorine gas with aqueous calcium iodide Cl 2 (g) + CaI 2 (aq) CaCl 2 (aq) + I 2 (s)
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CHEMICAL EQUATIONS WORKSHEET – ANSWER KEY GENERAL CHEMISTRY PAGE 2 OF 6 2. Identify the specific type of reaction and balance the chemical reaction. State whether the reaction is an oxidation-reduction reaction. (a)
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This note was uploaded on 01/21/2011 for the course PHYS 4A 60865 taught by Professor L. oldewurtel during the Fall '09 term at Irvine Valley College.

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2010 Spring Chemical Equations Worksheet - Key - CHEMICAL...

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