chem237_final_pkt_pt1 - (Page 1-14) r) (3 points each)....

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r) (3 points each). Fill in the blanks provided on the left of each of the following questions, with the letter corresponding to correct answer that best describes that question. DO NOT CIRCLE TEE LETTER: 1) What is the correct WAC name for the compound shown on the right? : c1: " \ 2) Which one of the following compounds is a secondaw (2') arnine? 3). Which one of the following compounds does not have an octet of electrons surroundinp the central atom? A) Hz0 B) m3 C) CH4 D) BH3 E) H2S 4) Which species amongst the following is (or has a carbon atom) in the oxidation state of +3? 5) The dihedral angle between the two bromine atomsin the adjacent wedge and dash structure is, .- : B: - A) 30" B) 60" C) 90" D) 120" E) 1.80" "H "H~ " Yc : Br: . . 6) Which one of the following statements is incorrect and false? 4- .A) HBr is a stronger acid than HCl B) pH3 is a stronger acid than C) m2 is a stronger base than -OH D) -OH is a weaker base than -OCH3 E) F is a weaker base than Br- 7) Which one of the following species will be formed as an " peroxide intermediate in the mechanism of the reaction shown at right? H3C-CHYCH, , + H-Br: A + ~~~--~~~--i~~ B) IZ~-CH,-&2 C) H~c--&--cH~--B~ a. : D) H~c--cH--cH,--~~~: E) none of the preceding four species 411 be an intermediate in the mechanism of the above reaction 123 4 8) The 'c-~c sigma (4 bond inthe following compound M is formed ft011-1 H-C EC -C =C~ M the overlap of what type of orbitals? 9) Which one of the following is not a possible reaction for a carbocation? - react with a nucleophile B) rearrange to a more stable carbocation loose a P hydrogen atom to form an alkene D) react with the z electrons of an alkene E) add a proton (~3 to form an alkane
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10) The poorest leavina ~~up amongst the following will be 11) The sonect RmACname of the compopd shown in theNewman projection formula on right is SH, - A) 1,1,1,2-tetramethylethane B) 1 , 1 ,1-trirne thylpropane C) 2,2-dimethylbutane D) 2,3-dimethylbutane E) 2,2,3-trimethylpentane "lC'@:"' H CH, 12) The compound which has a partial positive charge or character on the chlorine atom is E) none of the preceding four compounds has a chlorine atom,with a partial positive charge 13) 'identify the.relationshi~ between.the following two structures P and Q. -. A) consti~utional isomers B) stefeoisomers different conformations of the same compound D) identical Yc E) none of the preceding four choices H C*, H H 14) Which one of the. following species cannot undergo the E2 reaction? E) All of the four p~eceding four compounds will undergo the E2 reaction 1% The leaving moup involved during the reaction shown on the nght is (H,C)rCH-OH + H-Cl: 1 6). Wbzcli one of the foilowing alkenes ,gives l-br0~0-2-rnefb~l-2-~entano~,~~pon reaction with Br2/HZO? A) H,C-CH=CH-CH-CH, B) H,C-CH,-CH4-Cq, H,C-CHI-CH-CH=CH, 6% 7% I I D), H,C-CH,-CH2-C=CH, Cq E) H3C-CH-CHz-CH=CH, cH3 17) Which one of the following statements is true and correct regarding the aIk.ynes?
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chem237_final_pkt_pt1 - (Page 1-14) r) (3 points each)....

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