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QUESTION 34 Bromine has two naturally occuring isotopes, Br-79 and Br-81, approximately 50% of each. Bromomethane will contain approximately 50% Br-79 and 50% Br-81. The mass spectrum peak for methane containing Br-79 will be referred to as the M+ (molecular ion) peak, and the peak for Br-81 will be called the M+2 peak, as Br-81 weighs two more amu than Br-79. What will be the locations of the two bromomethane peaks on the mass spectrum and what will be the approximate ratio of their heights? M+ = 94.034m/z M+2 = 96.034 m/z Ratio = 4:1 M+ = 79.90 m/z M+2 = 94.934 m/z Ratio = 2:3 M+ = 79 m/z M+2 = 81 m/z Ratio = 1:1 M+ = 95.04 mlz M+2 = 97.04 m/z Ratio = 3:1 M+ = 94 m/z M+2 = 96 m/z Ratio = 1:1

QUESTION 34 Bromine has two naturally occuring isotopes, Br-79 and Br-81, approximately 50% of each. Bromomethane will contain approximately 50% Br-79 and 50% Br-81. The mass spectrum peak for methane containing Br-79 will be referred to as the M+ (molecular ion) peak, and the peak for Br-81 will be called the M+2 peak, as Br-81 weighs two more amu than Br-79. What will be the locations of the two bromomethane peaks on the mass spectrum and what will be the approximate ratio of their heights? M+ = 94.034m/z M+2 = 96.034 m/z Ratio = 4:1 M+ = 79.90 m/z M+2 = 94.934 m/z Ratio = 2:3 M+ = 79 m/z M+2 = 81 m/z Ratio = 1:1 M+ = 95.04 mlz M+2 = 97.04 m/z Ratio = 3:1 M+ = 94 m/z M+2 = 96 m/z Ratio = 1:1

Chemistry
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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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QUESTION 34 Bromine has two naturally occuring isotopes, Br-79 and Br-81, approximately 50% of each. Bromomethane will contain approximately 50% Br-79 and 50% Br-81. The mass spectrum peak for methane containing Br-79 will be referred to as the M+ (molecular ion) peak, and the peak for Br-81 will be called the M+2 peak, as Br-81 weighs two more amu than Br-79. What will be the locations of the two bromomethane peaks on the mass spectrum and what will be the approximate ratio of their heights? M+: = 94.034m/z M+2 = 96.034 mlz Ratio = 4:1 O Mt: = 79.90 m/z M+2 : = 94.934 m/z Ratio = 2:3 M+ = 79 m/z M+2 = 81 m/z Ratio 1:1 M+ = 95.04 m/z M+2 = = 97.04 m/z Ratio = 3:1 M+: = 94 m/z M+2 - = 96 m/z Ratio = 1:1
Transcribed Image Text:QUESTION 34 Bromine has two naturally occuring isotopes, Br-79 and Br-81, approximately 50% of each. Bromomethane will contain approximately 50% Br-79 and 50% Br-81. The mass spectrum peak for methane containing Br-79 will be referred to as the M+ (molecular ion) peak, and the peak for Br-81 will be called the M+2 peak, as Br-81 weighs two more amu than Br-79. What will be the locations of the two bromomethane peaks on the mass spectrum and what will be the approximate ratio of their heights? M+: = 94.034m/z M+2 = 96.034 mlz Ratio = 4:1 O Mt: = 79.90 m/z M+2 : = 94.934 m/z Ratio = 2:3 M+ = 79 m/z M+2 = 81 m/z Ratio 1:1 M+ = 95.04 m/z M+2 = = 97.04 m/z Ratio = 3:1 M+: = 94 m/z M+2 - = 96 m/z Ratio = 1:1
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