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Results tagged with reactivity
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user 4231
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.
5
votes
Accepted
Why does free silicon react with water?
Is there an explanation for the tendency of silicon compounds to react
with water?
Reaction with water, oxygen, etc., the answer is the same and has to do with the strength of the $\ce{Si-O}$ b …
- 85.4k
2
votes
Accepted
Grignards and diatomic halogens
Can Grignards react with diatomic halogens as to perform an
substitution reaction?
Yes, but it looks like a mixture of products results, including something explosive. Here is a link to an abs …
- 85.4k
2
votes
How are reactivity and dipole moment related?
The reactivity of amines is generally based on how nucleophilic they are. …
- 85.4k
5
votes
Accepted
Reactivity of Alkanes
Does the tetrahedral structure of the alkanes contribute to their lower reactivity?
Hybridization is at the center of the answer. … From this argument we would expect that if we were to somehow increase the strain in an alkane, then we should increase its reactivity. A good example of such behavior can be found in cyclopropane. …
- 85.4k
4
votes
Why is chlorine and not fluorine labelled as the most reactive halogen for halogenation?
The reactivity of halogens in sunlight
OK, this tells us that we are dealing with a free radical reaction. Sunlight breaks the halogen bond ($\ce{X-X}$) to generate halogen free radicals. …
- 85.4k
5
votes
Accepted
Order of electrophilic substitution
In your series, all of the alkyl benzenes will have roughly the same +I inductive effect. Where they differ is with regard to the resonance effect. Hyperconjugated structures such as those drawn bel …
- 85.4k
2
votes
Accepted
Grignards do transmetallation?
Prof told me Grignards don't add to alkyl halides
Grignards can react with alkyl halides to form the expected coupling product. However yields are usually very low except under special condition …
- 85.4k
6
votes
Accepted
Reactivity of propellanes
Reactivity, on the other, hand is related to kinetics, a reflection of the activation energy involved in the rate determining step. … Comparing the thermodynamic heats of hydrogenation in your series of compounds cannot be used to meaningfully predict the kinetic reactivity of these compounds. …
- 85.4k
12
votes
Rate of EAS in chlorobenzene and fluorobenzene
The electrophilic reactivity of the other halobenzenes is also controlled by a blend of resonance and inductive effects. …
- 85.4k
20
votes
Why is a ketone more nucleophilic than an ester?
Then, since they all go (more or less) to the same tetrahedral intermediate, one could explain the reactivity order based on differences in Eact. … This is another textbook method used to explain the carbonyl reactivity pattern.
Finally, what is the "correct" answer? …
- 85.4k
18
votes
Rationalising the order of reactivity of carbonyl compounds towards nucleophiles
nucleophiles
$$\ce{ester > amide >> carboxylate}$$
There's really no difference between the ester and carboxylic acid in terms of resonance structure III contribution so we would expect them to have similar reactivity …
- 85.4k
9
votes
Accepted
How can I work out what reaction will happen?
There are no 'free electrons' that I can see in ethene
That's correct, but... In ethene there are two bonds between the two carbons that hold the two carbons together. A chemist calls this a "d …
- 85.4k
9
votes
Accepted
Acid chlorides and reduction by hydrogenation
Hydrogen gas and platinum metal simply work here because the C=O part
of the acid chloride is flat.
It's more than just that. Acid chlorides are significantly more reactive towards catalytic h …
- 85.4k
7
votes
Accepted
Why is phenyl weakly activating?
In the following diagram, which carbocation is more stable, A or B?
The answer is A because the positive charge on the positively charged carbon can be delocalized into the attached benzene ring (I …
- 85.4k
9
votes
Accepted
Comparing the reactivity towards aromatic electrophilic substitution reaction
We can answer your question by first looking at each individual, unsubstituted position in the benzene ring and determining the relative reactivity at each of these positions. …
- 85.4k