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Unformatted text preview: SUPL005 ? k (Newtons/m = kgsec2 ) C  C 500 C == C 1000 C C 1500 = (1 / 2 ) ( k / ) 1/2 = 0.1592 * ( k / 1 X 1026 ) = 1.592 X 10 12 k 1/2 Which gives: 35.7 X 10 13 , 50.3 X 10 13 and 61,7 X 10 13 for the frequencies of the three bond types. To calculate the frequencies in wave numbers (cm1 ) we need the reciprocals of the corresponding wavelengths which are given by: 1 / = / c (where c is the velocity of light in cm/sec, namely, 2.997 X 10 10 cm/sec) The calculations produce 1191, 1678 and 2059 cm1 respectively for the single, double and triple bonded carbon atoms. These numbers compare very favorably with the values listed in SUPL005 which are 1200, 1680 and 2180 respectively....
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 Spring '09
 RALEIGH
 Chemistry, Atom

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