Mass spectrum of a molecule
$begingroup$
Mass spectrum of a molecule showed molecular ion peak and its isotopic
peak in 1:1 ratio. What is the possibility of the atom present in the
molecule?
Since it is mentioned that it has a molecular ion peak it gives the fact that it must be aromatics, olefins and not alcohols or branched hydrocarbons since the latter have less probability to show molecular ion peaks . Since they contain isotopic peaks it must mean they have chloro or bromo compounds. But I do not understand how to use ratios to identify the atom present in the molecule
molecules mass-spectrometry
asked 4 hours ago
Mizbaah GhouseMizbaah Ghouse
62
New contributor
Mizbaah Ghouse is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
Mass spectrum of a molecule showed molecular ion peak and its isotopic
peak in 1:1 ratio. What is the possibility of the atom present in the
molecule?
Since it is mentioned that it has a molecular ion peak it gives the fact that it must be aromatics, olefins and not alcohols or branched hydrocarbons since the latter have less probability to show molecular ion peaks . Since they contain isotopic peaks it must mean they have chloro or bromo compounds. But I do not understand how to use ratios to identify the atom present in the molecule
molecules mass-spectrometry
asked 4 hours ago
Mizbaah GhouseMizbaah Ghouse
62
New contributor
Mizbaah Ghouse is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
1
$begingroup$
Thank you and I have edited and added my effort into solving the problem.
$endgroup$
– Mizbaah Ghouse
3 hours ago
$begingroup$
The abundance of the isotopes of Chlorine 35:37 is approx 3:1 and is characteristic of chlorinated compounds.
$endgroup$
– Waylander
3 hours ago
add a comment |
$begingroup$
Mass spectrum of a molecule showed molecular ion peak and its isotopic
peak in 1:1 ratio. What is the possibility of the atom present in the
molecule?
Since it is mentioned that it has a molecular ion peak it gives the fact that it must be aromatics, olefins and not alcohols or branched hydrocarbons since the latter have less probability to show molecular ion peaks . Since they contain isotopic peaks it must mean they have chloro or bromo compounds. But I do not understand how to use ratios to identify the atom present in the molecule
molecules mass-spectrometry
asked 4 hours ago
Mizbaah GhouseMizbaah Ghouse
62
New contributor
Mizbaah Ghouse is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
Mass spectrum of a molecule showed molecular ion peak and its isotopic
peak in 1:1 ratio. What is the possibility of the atom present in the
molecule?
Since it is mentioned that it has a molecular ion peak it gives the fact that it must be aromatics, olefins and not alcohols or branched hydrocarbons since the latter have less probability to show molecular ion peaks . Since they contain isotopic peaks it must mean they have chloro or bromo compounds. But I do not understand how to use ratios to identify the atom present in the molecule
molecules mass-spectrometry
molecules mass-spectrometry
asked 4 hours ago
Mizbaah GhouseMizbaah Ghouse
62
New contributor
Mizbaah Ghouse is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
Mizbaah GhouseMizbaah Ghouse
62
New contributor
Mizbaah Ghouse is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 3 hours ago
Mizbaah Ghouse
asked 4 hours ago
Mizbaah GhouseMizbaah Ghouse
62
New contributor
Mizbaah Ghouse is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
Mizbaah GhouseMizbaah Ghouse
62
asked 4 hours ago
Mizbaah GhouseMizbaah Ghouse
62
62
New contributor
Mizbaah Ghouse is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Mizbaah Ghouse is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Mizbaah Ghouse is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
$begingroup$
Thank you and I have edited and added my effort into solving the problem.
$endgroup$
– Mizbaah Ghouse
3 hours ago
$begingroup$
The abundance of the isotopes of Chlorine 35:37 is approx 3:1 and is characteristic of chlorinated compounds.
$endgroup$
– Waylander
3 hours ago
add a comment |
1
$begingroup$
Thank you and I have edited and added my effort into solving the problem.
$endgroup$
– Mizbaah Ghouse
3 hours ago
$begingroup$
The abundance of the isotopes of Chlorine 35:37 is approx 3:1 and is characteristic of chlorinated compounds.
$endgroup$
– Waylander
3 hours ago
1
1
$begingroup$
Thank you and I have edited and added my effort into solving the problem.
$endgroup$
– Mizbaah Ghouse
3 hours ago
$begingroup$
Thank you and I have edited and added my effort into solving the problem.
$endgroup$
– Mizbaah Ghouse
3 hours ago
$begingroup$
The abundance of the isotopes of Chlorine 35:37 is approx 3:1 and is characteristic of chlorinated compounds.
$endgroup$
– Waylander
3 hours ago
$begingroup$
The abundance of the isotopes of Chlorine 35:37 is approx 3:1 and is characteristic of chlorinated compounds.
$endgroup$
– Waylander
3 hours ago
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
Each element has different natural abundances for its isotopes. Two peaks with approximately 1:1 ratio indicates the presence of bromine. $ce{^{79}Br}$ is the most common isotope, corresponding to $0.5069$ of naturally occurring bromine. The isotopic composition for $ce{^{81}Br}$ is $0.4931$.
What this means is that, approximately, half of the molecular ions will have $ce{^{79}Br}$ and the other half will have $ce{^{81}Br}$, resulting in two peaks with roughly the same intensity with $m/Z$ differing by two units.
References:
[1] https://www.nist.gov/pml/atomic-weights-and-isotopic-compositions-relative-atomic-masses
[2]https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Supplemental_Modules_(Analytical_Chemistry)/Instrumental_Analysis/Mass_Spectrometry/Organic_Compounds_Containing_Halogen_Atoms
answered 38 mins ago
Antonio de Oliveira-FilhoAntonio de Oliveira-Filho
1767
$endgroup$
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "431"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Mizbaah Ghouse is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fchemistry.stackexchange.com%2fquestions%2f114587%2fmass-spectrum-of-a-molecule%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
Each element has different natural abundances for its isotopes. Two peaks with approximately 1:1 ratio indicates the presence of bromine. $ce{^{79}Br}$ is the most common isotope, corresponding to $0.5069$ of naturally occurring bromine. The isotopic composition for $ce{^{81}Br}$ is $0.4931$.
What this means is that, approximately, half of the molecular ions will have $ce{^{79}Br}$ and the other half will have $ce{^{81}Br}$, resulting in two peaks with roughly the same intensity with $m/Z$ differing by two units.
References:
[1] https://www.nist.gov/pml/atomic-weights-and-isotopic-compositions-relative-atomic-masses
[2]https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Supplemental_Modules_(Analytical_Chemistry)/Instrumental_Analysis/Mass_Spectrometry/Organic_Compounds_Containing_Halogen_Atoms
answered 38 mins ago
Antonio de Oliveira-FilhoAntonio de Oliveira-Filho
1767
$endgroup$
add a comment |
$begingroup$
Each element has different natural abundances for its isotopes. Two peaks with approximately 1:1 ratio indicates the presence of bromine. $ce{^{79}Br}$ is the most common isotope, corresponding to $0.5069$ of naturally occurring bromine. The isotopic composition for $ce{^{81}Br}$ is $0.4931$.
What this means is that, approximately, half of the molecular ions will have $ce{^{79}Br}$ and the other half will have $ce{^{81}Br}$, resulting in two peaks with roughly the same intensity with $m/Z$ differing by two units.
References:
[1] https://www.nist.gov/pml/atomic-weights-and-isotopic-compositions-relative-atomic-masses
[2]https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Supplemental_Modules_(Analytical_Chemistry)/Instrumental_Analysis/Mass_Spectrometry/Organic_Compounds_Containing_Halogen_Atoms
answered 38 mins ago
Antonio de Oliveira-FilhoAntonio de Oliveira-Filho
1767
$endgroup$
add a comment |
$begingroup$
Each element has different natural abundances for its isotopes. Two peaks with approximately 1:1 ratio indicates the presence of bromine. $ce{^{79}Br}$ is the most common isotope, corresponding to $0.5069$ of naturally occurring bromine. The isotopic composition for $ce{^{81}Br}$ is $0.4931$.
What this means is that, approximately, half of the molecular ions will have $ce{^{79}Br}$ and the other half will have $ce{^{81}Br}$, resulting in two peaks with roughly the same intensity with $m/Z$ differing by two units.
References:
[1] https://www.nist.gov/pml/atomic-weights-and-isotopic-compositions-relative-atomic-masses
[2]https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Supplemental_Modules_(Analytical_Chemistry)/Instrumental_Analysis/Mass_Spectrometry/Organic_Compounds_Containing_Halogen_Atoms
answered 38 mins ago
Antonio de Oliveira-FilhoAntonio de Oliveira-Filho
1767
$endgroup$
Each element has different natural abundances for its isotopes. Two peaks with approximately 1:1 ratio indicates the presence of bromine. $ce{^{79}Br}$ is the most common isotope, corresponding to $0.5069$ of naturally occurring bromine. The isotopic composition for $ce{^{81}Br}$ is $0.4931$.
What this means is that, approximately, half of the molecular ions will have $ce{^{79}Br}$ and the other half will have $ce{^{81}Br}$, resulting in two peaks with roughly the same intensity with $m/Z$ differing by two units.
References:
[1] https://www.nist.gov/pml/atomic-weights-and-isotopic-compositions-relative-atomic-masses
[2]https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Supplemental_Modules_(Analytical_Chemistry)/Instrumental_Analysis/Mass_Spectrometry/Organic_Compounds_Containing_Halogen_Atoms
answered 38 mins ago
Antonio de Oliveira-FilhoAntonio de Oliveira-Filho
1767
answered 38 mins ago
Antonio de Oliveira-FilhoAntonio de Oliveira-Filho
1767
answered 38 mins ago
Antonio de Oliveira-FilhoAntonio de Oliveira-Filho
1767
answered 38 mins ago
Antonio de Oliveira-FilhoAntonio de Oliveira-Filho
1767
1767
add a comment |
add a comment |
Mizbaah Ghouse is a new contributor. Be nice, and check out our Code of Conduct.
Mizbaah Ghouse is a new contributor. Be nice, and check out our Code of Conduct.
Mizbaah Ghouse is a new contributor. Be nice, and check out our Code of Conduct.
Mizbaah Ghouse is a new contributor. Be nice, and check out our Code of Conduct.
Thanks for contributing an answer to Chemistry Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fchemistry.stackexchange.com%2fquestions%2f114587%2fmass-spectrum-of-a-molecule%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
$begingroup$
Thank you and I have edited and added my effort into solving the problem.
$endgroup$
– Mizbaah Ghouse
3 hours ago
$begingroup$
The abundance of the isotopes of Chlorine 35:37 is approx 3:1 and is characteristic of chlorinated compounds.
$endgroup$
– Waylander
3 hours ago