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InClassWorksheet2010

# InClassWorksheet2010 - CEE 320 In-Class Chemistry Review...

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CEE 320 – In-Class Chemistry Review Worksheet Spring 2010 Topic 1: Stoichiometry 1. Balancing equations: ___ C 3 H 6 Cl 2( l ) + ___ O 2( g ) ___ CO 2( g ) + ___ H 2 O ( l ) + ___ HCl [This equation describes the incineration of liquid dichloropropane.] See Ex. 2-4 and 2-5 in text for more examples. 2. Using balanced equations for information: Using your balanced equation above, if 3 kg of CO 2(g) is produced, how much dichloropropane (C 3 H 6 Cl 2 ) was burned, in kg? Assume 100% efficiency in the reaction. From this answer, what percent by mass is chlorine in dichloropropane? Topic 2: Equilibrium 3. Acid-Base Equilibrium Why does H 2 CO 3 dissociate the way it does? Write the acid-base equilibrium equations describing the carbonate cycle. At pH 7, describe the relative concentrations of carbonate species in words.

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CEE 320 – In-Class Chemistry Review Worksheet Spring 2010 4. Solubility Equilibrium (between a solid and water). Work on these with your neighbor! Given the pK sp for CaCO 3(s) is 8.34 and a solution contains: [Ca 2+ ] = 10 -3 M [CO 3 2- ] = 4.6 × 10 -6 M
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InClassWorksheet2010 - CEE 320 In-Class Chemistry Review...

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