Questions tagged [reactivity]
Applied to a chemical species, the term expresses a kinetic property in reference to another species. The tag should be applied to questions seeking answers with respect to the reactivity (or unreactivity) of a certain chemical compound, species, molecular entity and/or functional groups. It must not be applied to questions about the stability of certain chemical species.
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When, how and why does sodium metal react with cycloalkenes, cycloalkadienes, cycloalkatrienes?
I've been searching for the conditions necessary for the reaction of sodium (Na) metal with cycloalkenes, cyclo-di-alkenes, cyclo-tri-alkenes all over the internet but I cannot find a proper answer. ...
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Does anisole react with concentrated nitric or sulfuric acid
Can we add concentrated $\ce{H2SO4}$ and concentrated $\ce{HNO3}$ to anisole?
I heard that we can't add acids into phenol and aniline which make them blast.
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Why does free silicon react with water?
Free silicon is not found in nature (in water, it might be present in the form $\ce{Si(OH)_{4}}$. Some compounds of silicon, such as silane ($\ce{SiH_{4}}$) will react spontaneously in an aqueous ...
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Solve this chemical or biological mystery
I hope this is the best place to pose this unique question. Please forgive me if it's not.
I went into a closet to get a prescription medication that was filled about a year ago.
The label on the ...
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Nucleic Acids Bonds
In a paper I am reading regarding instability and decay of DNA, the author says:
"The chemical price paid for the greatly increased resistance of the nucleic acid phosphodiester bond (gained by ...
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Electrophilicities of carboxylic acid derivatives
I would like to ask about the rate of hydrolysis for 4-hydroxyphenyl acetate (A), N-(4-hydroxyphenyl)acetamide (B), 4-hydroxyphenyl chloroacetate (C), and methyl 4-hydroxybenzoate (D). I know that ...
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Predicting order of nucleophilic substitution reactivity
What order of reactivity do you predict will be observed when each alkyl halide is mixed with sodium iodide in acetone?
1-Chlorobutane
1-Bromobutane
2-Chloro-2-methylpropane
Bromobenzene
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Comparing SN2 reaction rates
I've read in a book that the main factor for determining SN2 reaction rate is steric hindrance. The lesser it is, the faster the reaction.
So consider this question:
$\ce{KI}$ in acetone undergoes ...
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Do epoxide rings react with bases?
We've learned in class that epoxide ring openings can be catalyized with acids, and I seem to recall either the professor or a classmate mentioning that they also react with bases, but some quick ...
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Does an acetal give a positive Tollens test?
In Organic Chemistry (Wade) there is a question:
Which of the following compounds would give a positive Tollens' test? (Remember that the Tollens' test involves mild basic aqueous conditions.)
The ...
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Why is a hydroxyl group more activating than a methoxy group in electrophilic aromatic substitution?
Why is phenol more reactive towards electrophilic substitution than methoxybenzene? Isn't the lone pair on the methoxy group oxygen more available for participating in resonance into the ring than the ...
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Which factor should I take into priority to determine reactivity of of Halides?
Such as in the attached question I was taking into account the stability of the carbocations (by the number of resonating structures) formed after removal of Chlorine from and concluded to be the ...
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Order of electrophilic substitution
What will be the order of reactivity towards electrophilic substitution in case of the following compounds:
benzene, ethyl benzene, isopropyl benzene, tert-butyl benzene
The answer at the end of the ...
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HOMO/LUMO and charge distribution
I am a little bit confused between charge distribution and HOMO/LUMO site in determining chemical reactivity. In charge distribution, the sites which are deficient and abundant in electrons are ...
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Acid chlorides and reduction by hydrogenation
An acid chloride being reduced through catalytic hydrogenation is an "unobserved" event in the context of our class, according to my professor. Nonetheless, we are expected to predict that the ...
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