keyMT105[1]

keyMT105[1] - The activation energy difference necessary to...

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Unformatted text preview: The activation energy difference necessary to produce a rate difference 0110:] is: [I 4.1 kcal/mole CI 13.5 kcalr'mole 1.35 kcali’mole E! 2.7 kcalfmole The pKa of H20 is: [j 7 I] 60 _ [:I 14 m 15.6 The electronegativity of O is: [I 2.5 [I 3.0 IE] 3.5 E] 4.0 The electronegativity of C is: L2! 2.5 I] 3.0 [II 3.5 l] 4.0 An acid with a pKa of 20 relative to one with a pKa 30 produces at equilibrium: [:I twice as much hydroniurn ion El half as much hydronium ion [:I 1010 as much hydronium ion E 105 as much hydronium ion In 2-methylheptane, any H—C—C angle has a value of: E] 120° [:1 90° [2! 109.5" [I 130° Draw electron-dot pictures for CH3Cl and HOH including all lone pairs of electrons. Place your answers in the boxes below. . Show the bond polarizations in the molecules show below by adding either 5+ and 6— symbols or dipole arrows (but NOT both) to the appropriate atomsfbonds- 9. Label the primary, Secondary, and tertiary carbons in 2-methylpentane. Place your answer in the box below. 10; Draw the expected potential-energy diagram for the rotation about the C2-C3 bond in 2,3-dimethylbutane. Include the Newman projections of each staggered and eclipsed conformation. You should NOT include any duplicates (to save you time- hint: there are only two unique eclipsed and two unique staggered conformations). Put your answer in the box below. l 1. Draw a picture of an ethyl radical that shows the hyperconj ugatiori that makes this radical more stable than a methyl radical. 12. Draw all possible isomers of C7H16 (as line notations, no atoms, only bond lines). Put your answers in the boxes below. IHIHI HEW Write out the propagation steps of the mechanism for the free radical chlorination o chloromethane (CH3C1). Use the appropriate curved arrows to Show the movement of electrons. ...
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keyMT105[1] - The activation energy difference necessary to...

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