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Practice_Quiz_3_blank - NO 2 + CH 3 ONa NaCH 2 NO 2 + CH 3...

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Chemistry 322aL Practice Quiz 3 (1) In the reaction below, identify the acid, base, conjugate acid and conjugate base according to the Bronsted-Lowry definitions. (CH 3 CH 2 ) 2 NH + CH 3 CH 2 Li (CH 3 CH 2 ) 2 NLi + CH 3 CH 3 (2) In the reaction below, identify the Lewis acid and Lewis base. Use the curved arrow formalism to show movement of electrons. Assign any missing formal charges in the product structure. AlCl 3 + :NH 3 Cl 3 Al-NH 3 - +
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(3) Based on the information provided, answer the following questions about acids and bases. Circle the stronger acid in each pair of compounds. pK a HBr C 6 H 5 SO 3 H -9 -6.5 pK a HF HCN 3.17 9.2 Circle the stronger base in each pair based on information provided for the conjugate acids. pK a NH 3 HS - 9.24 7.00 pK a HC C - H - (hydride) 25 35
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(4) Based on the information provided, indicate with an arrow the direction of the spontaneous acid-base reaction. CH 3
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Unformatted text preview: NO 2 + CH 3 ONa NaCH 2 NO 2 + CH 3 OH pK a 10 pK a 15 CH 3 CCH 3 + H 3 O CH 3 CCH 3 + H 2 O O O H + + pK a-1.74 pK a-7 (A) (B) In equation (A), is the product state on the right at higher or lower free energy than the reactant state on the left? In equation (B), when the reaction proceeds from the state on the left to the state on the right, is the Gibbs standard free energy change positive or negative? (5) Rank the compounds in the two series below in order of their acid strength (1= strongest to 3 = weakest). CH 3 COOH HCl CH 3 CH 2 OH CH 3 COOH F 3 CCOOH F 3 CCH 2 COOH (6) Provide the missing structures in the boxes below. C 6 H 5 C CH + CH 3 CH 2 CH 2 CH 2 Li cyclohexane as solvent CH 3 CH 2 CH 2 CH 3 + pK a = 25 pK a > 50 D 2 O pK a = 16.5 + inorganic byproduct...
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Practice_Quiz_3_blank - NO 2 + CH 3 ONa NaCH 2 NO 2 + CH 3...

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