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Isotopic substitution changes the rotational energy levels of a molecule. This phenomenon can be used for precise evaluation of the atomic weight of isotopes. The first line (J = 0) in the pure rotational spectrum of 12C160 and 13C160 are found to be 3.84235 and 3.67337 cm-1, respectively. Calculate the precise atomic weight of 13C given that the precise atomic weight of 160 is 15.9994 and that of 12C is 12.011. (Consider the molecules as rigid rotor and isotopic substitution does not affect the bond length).

Isotopic substitution changes the rotational energy levels of a molecule. This phenomenon can be used for precise evaluation of the atomic weight of isotopes. The first line (J = 0) in the pure rotational spectrum of 12C160 and 13C160 are found to be 3.84235 and 3.67337 cm-1, respectively. Calculate the precise atomic weight of 13C given that the precise atomic weight of 160 is 15.9994 and that of 12C is 12.011. (Consider the molecules as rigid rotor and isotopic substitution does not affect the bond length).

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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.Isotopic substitution changes the rotational energy levels of a molecule. This phenomenon can be used for precise evaluation of the atomic weight of isotopes. The first line (J = 0) in the pure rotational spectrum of 12C160 and 13C160 are found to be 3.84235 and 3.67337 cm-1, respectively. Calculate the precise atomic weight of 13C given that the precise atomic weight of 160 is 15.9994 and that of 12C is 12.011. (Consider the molecules as rigid rotor and isotopic substitution does not affect the bond length).
Transcribed Image Text:.Isotopic substitution changes the rotational energy levels of a molecule. This phenomenon can be used for precise evaluation of the atomic weight of isotopes. The first line (J = 0) in the pure rotational spectrum of 12C160 and 13C160 are found to be 3.84235 and 3.67337 cm-1, respectively. Calculate the precise atomic weight of 13C given that the precise atomic weight of 160 is 15.9994 and that of 12C is 12.011. (Consider the molecules as rigid rotor and isotopic substitution does not affect the bond length).
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