Name Chem 227 Exam #1 I. CIRCLE the correct answer: TRUE-FALSE questions 1) Alka
ID: 544940 • Letter: N
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Name Chem 227 Exam #1 I. CIRCLE the correct answer: TRUE-FALSE questions 1) Alkanes and cycloalkanes show cis- tranu isomerism. 2) Alkenes and alkynes are unsaturated hydrocarbons. 3) Alkenes and alkynes are nonppolar molecules. 4) When 5) Between a strong acid and a weak acid, the stronger acid will give rise to the stronger conjugate base. 6) Alkene addition reactions involve breaking pi bond and forming two new sigma bonds in its place. 7) The foundation of Markovnikov's rule is the relative stability of carboncation intermediate. 8) The carbon-carbon double bond is a combination of two sigma bonds. 9) A functional group is a group of atoms in an organic molecule that undergoes a predictable set (A) TRUE A) TRUE (A) TRUE (A) TRUE (A) TRUE (A) TRUE (A) TRUE (A) TRUE (B) FALSE (B) FALSE (B) FALSE (B) FALSE (B) FALSE (B) FALSE (B) FALSE (B) FALSE compairing the relative strength of acids, the stronger acid has the smaller pKa. of chemical reaction. (A) TRUE (B) FALSE 10) If the difference in electronegativity between two atoms is zero, then the two atoms will not form the covalent bond. 11) Acid-catalyzed addition of H20 to an alkene is called hydration 12) A carboncation is a carbon atom that has four bonds to it and bears a positive charge. 13) Hexane and cyclohexane are constitutional isomers. 14) The C-C double bonds in benzene do not undergo the same addition reactions that the C-C double (A) TRUE (A) TRUE (A) TRUE (A) TRUE (B) FALSE (B) FALSE (B) FALSE (B) FALSE bonds in alkenes undergo. (A) TRUE (B) FALSE 15) An aromatic compound is planar, possesses a sp2 hybridization on every carbon atom of the ring, and contains either 4, 8, 12, 16, and so on, pi electron. (A) TRUE (B) FALSE 16) 1,2-Dimethylcyclohexene shows cis-trans isomerism. (A) TRUE FALSEExplanation / Answer
11) True
Acid-catalyzed addition of H2O to an alkene is called hydration.
14) True
Other options are correct as you circle them.
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