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.

Filter by
Sorted by
Tagged with
1
vote
1answer
267 views

Equation for reaction between chlorine fluoride and potassium bromide

The equation given in the answer key was $$\ce{ClF + 2KBr → KCl + KF + Br2}$$ However won't the $\ce{KCl}$ also react with $\ce{ClF}$ to form $\ce{KF}$ and $\ce{Cl2}$, resulting in the net reaction ...
1
vote
1answer
31 views

Would atomic oxygen and atomic hydrogen result in O2 and H2 only, or some H2O too? [closed]

Let's assume we have atomic oxygen and atomic hydrogen in a closed chamber, the temperature and pressure of which we're able to monitor (and control). Number of hydrogen atoms are twice that of oxygen....
1
vote
1answer
140 views

Can nitrogen dioxide react with plastics of any kind? [closed]

I have searched a lot on the internet but couldn't find any helpful thing. My question is that can nitrogen dioxide react with plastics of any kind?
1
vote
1answer
262 views

Can hydrobromic acid perform substitution with propane?

I am a student in the 11th grade, we recently had a chemistry exam, I lost marks because of a question that asks about the reaction between $\ce{HBr}$ and $\ce{C3H8}$. According to our teacher $\ce{...
1
vote
1answer
857 views

Rate of reaction with HBr [closed]

Rate of reaction is more when Carbon is more electrophile(less electron density) So according to me the order should be D>B>C>A As NO2 has -M -I effect , Cl has +M -I effect , while OCH3 has +M -I ...
1
vote
1answer
3k views

Water with Sodium VS Alcohols with Sodium

Why is the reaction between water and sodium more vigorous than that between ethanol and sodium? Also, why does the reaction between sodium and an alcohol becomes less vigorous the longer the ...
1
vote
1answer
5k views

What is the difference between activity and reactivity when discussing elements?

I screwed up on a true/false question that stated that lithium is the most active alkali metal. I answered false, because I remembered that the lower you go in this group, the more explosive the ...
1
vote
3answers
1k views

Why would the hydrogen sulfide ion be a better nucleophile than a bromide ion?

Why would the hydrogen sulfide ion be a better nucleophile than a bromide ion? My professor says that hydrogen sulfide ion is a better nucleophile. I thought I could determine the better ...
1
vote
1answer
201 views

Alkyl halide reaction

In the following the reaction , According to me the product should be compound (A) due to substitution reaction. But the product formed is the compound (B) , what could be the mechanism for the ...
1
vote
1answer
45 views

Is the variation in carbonation of soft drinks the variable that affects the effectiveness of the mentos reaction?

I went and bought a bottle of Fanta and some Mentos to replicate the famous youtube videos of the big fizzy reaction. The result was dismal, it weakly foamed up and dribbled over the edge. I tried ...
1
vote
1answer
7k views

What is the standard potential of carbon?

What's the value of standard potential of carbon? The hydrogen and Carbon are in the electrochemical series despite being non metals hydrogen has zero potential difference what about carbon?
1
vote
2answers
1k views

How can you predict a double displacement reaction with no precipitate?

Is it possible to predict a double displacement reaction between two ions where the products remain in aqueous solution? I see how you can predict precipitation reactions if you know whether the ...
1
vote
0answers
60 views

How to predict and measure excess values of reactivity ratios for copolymerization with three monomers?

I ask this question because I haven't found interesting literature on the subject and I would like to know if my way to think is good or pure bullshit. Also the question is quite long because I have ...
1
vote
0answers
158 views

Requirement of different reagents for bromination of different substituted benzene rings

Consider the bromination reactions of phenol and anisole. We know that the former can be brominated by aqueous bromine, while the latter requires the catalyst $\ce{FeBr3}$ instead. Our teacher said ...
1
vote
0answers
57 views

Do amides oxidize to double-bonds?

Do amides from primary or secondary amines ever oxidize to a double-bond on the nitrogen? For example, like from an $\mathrm{R \bbox[yellow]{\color{red}{-}}(NH)-(C=O)-R'}$ to an $\mathrm{ R \bbox[...
1
vote
0answers
164 views

Why is cyclopropylmethyl radical opening so fast?

Ring opening of the cyclopropylmethyl radical is reliable and fast, and so has been used as a radical trap and a radical clock. Could someone please explain what exactly makes this reaction so fast, ...
1
vote
0answers
437 views

Intermolecular forces between C and Na2O [closed]

I was trying to do an experiment called Pharaoh's Serpent and I read that the intermolecular forces between the $\ce{C}$ and the $\ce{Na2O}$ (formed in the thermal decomposition of the $\ce{NaHCO3}$) ...
1
vote
1answer
2k views

How can I predict whether a reaction will occur? [duplicate]

I'd like to know how can I predict if two substances will react. I already know that there's a reaction if one of the products is a weak electrolyte or a precipitate but that leads me to the question: ...
1
vote
0answers
107 views

Material for melting metal oxides

I am constructing an apparatus for high temperature, strong alkaline melts (metal melts), with extremely high oxygen rich environments. Here what I have so far. Iridium is a good candidate - is it ...
1
vote
0answers
172 views

How do you know if SN1 orSN2 reaction occurs when it is not so obvious? [closed]

For instance, when you have a primary halide with a weak nucleophile, do you think that the reaction mechanism would be SN1 or SN2, neither or would it even be both, like sometime leaving group can ...
1
vote
0answers
267 views

Why are copper, iron and lead so common in everyday use?

Copper, iron and lead are commonly used around the world in construction, for pipes and in electrical wiring. Why are these used instead of zinc and magnesium?
1
vote
0answers
75 views

What does the following sentence mean - “Li is least reactive but the strongest reducing agent among all alkali metals”

Isn't it contrasting? Is reactivity only concerned with kinetics of reaction ? PS - I am a high school student, probably I might be missing small detail!
1
vote
0answers
89 views

Are there any Endothermic Pyrophoric Substances?

I've recently been reading about pyrophoric materials, specifically as they relate to rocketry, and this made me curious if there are any substances which are the complete opposite of pyrophoric. ...
1
vote
1answer
562 views

Calcium reactivity vs electronic configuration

Calcium is an alkaline earth metal, so it is reactive. But, it has two valence electrons. Don't those two electrons fill up the first energy level? Isn't an atom with a full energy level considered ...
0
votes
3answers
5k views

Why does calcium oxide react with sulfur dioxide?

Which of the following compounds reacts with calcium oxide, $\ce{CaO}$? (a) $\ce{K2O}$ (b) $\ce{Na2O}$ (c) $\ce{SO2}$ (d) $\ce{MgO}$ I thought that since sodium is higher in the reactivity ...
0
votes
1answer
7k views

Why don't calcium chloride and sodium nitrate react?

$$\ce{CaCl2 + 2NaNO3 -> 2NaCl + Ca(NO3)2}$$ Why doesn't the above reaction occur? Does it have to do with the metal activity series or solubility rules?
0
votes
1answer
384 views

Can someone explain the unintuitive ordering in the metallic activity series?

I would understand it if the metallic activity series Li, Cs, Rb, ... Pt, Au corresponded to electronegativity or ionization energy. However, the way it is written, ...
0
votes
2answers
11k views

What determines whether a double displacement reaction will occur?

In normal displacement reactions, reactivity plays a large role and sometimes the reaction doesn't even happen. So is there anything limiting double displacement reactions? For example $\ce{2KI + Pb(...
0
votes
1answer
3k views

Is calcium hydroxide or potassium hydroxide more efficient at removing carbon dioxide?

In biology, we commonly use $\ce{KOH}$ in respirometers to remove carbon dioxide. A common test in chemistry to detect the presence of carbon dioxide is to bubble it through limewater, turning it ...
0
votes
1answer
1k views

Reactivity of Benzaldehyde between aldehydes [closed]

Are Benzaldehydes less reactive than aldehydes due to the -R Effect of the -CHO group present on the benzene ring?
0
votes
3answers
1k views

Is graphene a combustible material?

Various sources such as https://news.ycombinator.com/item?id=7679154 speculate that graphene will combust at higher temperatures. Is this true? Is the flash point/ temperature of combustion for ...
0
votes
2answers
302 views

Derivation of Gibbs free energy formula

Okay, so I'm trying to derive an important formula which states that - ∆G(r) = ∆G° + RTln( RQ ) where ∆G(r) is the instantaneous rate of change of Gibbs energy with ...
0
votes
2answers
223 views

How could mass increase when sulfuric acid is added to calcium carbonate?

Context: I was doing an experiment in class that investigates the rate of mass loss over time when $\pu{20 mL}$ of sulfuric acid is added to $\pu{5g}$ of calcium carbonate. I did the experiment 3 ...
0
votes
1answer
2k views

Why does neighbouring group participation increase the rate of reaction?

I don't see any reason why the transition state of an SN2 reaction that happens after an internal nucleophilic group attacks(which is known as NGP) would be more stable. In fact, the nucleophilic ...
0
votes
1answer
215 views

Alkenes v/s Alkynes in two different reactions

Alkynes are less reactive towards electrophylic addition than alkenes. However, in case of catalytic hydrogenation, alkynes are said to be more reactive. Why? Also, if I want to add H+ as an ...
0
votes
1answer
414 views

Lab test to compare the reactivity of liquid 1-heptene and liquid heptane

Describe how you would carry out a lab test to compare the reactivity of liquid 1-heptene and liquid heptane. State clearly what the possible results of the test are and what they would indicate. ...
0
votes
1answer
155 views

Which of the following releases the smallest amount of energy upon gaining an electron?

$\ce{C}$, $\ce{Rb}$, $\ce{Ga}$, $\ce{Ge}$ I am confused in the sense that I don't know what it means by "released the smallest about of energy upon gaining?" would it be $\ce{Rb}$ because the shell ...
0
votes
1answer
668 views

Differences between alkyl halides and alkyl tosylates

What are the functional differences between alkyl halides alkyl tosylates? Both halides and tosylates are good leaving groups, yes. But is there chemistry that one will do and the other won't? Etc.? I'...
0
votes
1answer
672 views

Here are four observations of the reactions of four metals

Here are four observations of the reactions of four metals. Metal F and G react slowly with water Metal H displaces metal G from its chloride salt solution Metal E does not react with dilute acids ...
0
votes
1answer
44 views

What is the reason for more stable keto form to tautomerise to a less stable enol form?

In the mechanism of SeO2 I have seen that a more stable keto form first converts to a less stable enol form and then yields a diketone. I have seen many other reaction where the reactant converts to ...
0
votes
1answer
265 views

In a galvanic cell why does using a more reactive metal increase the voltage?

As the title says, why does using magnesium produce a higher voltage compared to using zinc when reacting with iron? Im having trouble figuring out why the voltage changes. magnesium+copper > zinc+...
0
votes
1answer
216 views

Does attachment of phenyl to an alkene increases its reactivity towards electrophilic addition reaction?

According to me phenyl should decrease the reactivity as its electron withdrawing nature destabilises the carbocation.
0
votes
1answer
3k views

What can be added to hydrochloric acid to make a gel or paste?

I have a bottle of brick cleaner containing 18-20% hydrochloric acid. What can I add to it to make a gel or paste without unwanted reactions? The application is still just cleaning bricks as the ...
0
votes
1answer
2k views

What factors affect the chemical stability of a compound? [closed]

My question is essentially about the factors that make certain atoms in certain compounds leave the compound they are currently in in order to bond with another atom/compound. For example, I've been ...
0
votes
1answer
341 views

Decomposing chemical compounds - Ease of Decomposition [closed]

Someone asked me a question, that which of the following can be decomposed chemically: Ammonia Iron Neon Hydrogen Fluorine My Analysis: At first attempt I answered Ammonia but changed it to 'I can'...
0
votes
0answers
21 views

Is the activation energy always inversely proportional to the reaction rate?

When I obtained the activation energy using the Arrhenius equation for a 10-minute glowstick (rapid, rigorous reaction), it was almost 4 times that of a 12-hour glowstick (slow, mild reaction). ...
0
votes
0answers
14 views

What is the order of acidity for hydrogens in primary, secondary and tertiary alkanes, alkenes, and cycloalkanes [duplicate]

The bond dissociation energies of C-H bonds in alkanes, alkenes and aromatic compounds decrease in the following order: primary > secondary > tertiary > allylic > benzylic. The weaker the bond, the ...
0
votes
0answers
25 views

What exactly is an 'activated' alcohol? Benzylic vs. Allylic vs. Aliphatic

I'm currently writing a report about the oxidations of various alcohols using different catalytic systems. In all papers it is stated that benzylic and allylic alcohols are "activated", while ...
0
votes
0answers
36 views

How to increase the conversion for the reaction between 2-acetylpyridine and diamine?

I tried refluxing in toluene using activated molecular sieves to absorb any water produced (didn't use Dean-Stark trap as it's a very small scale reaction). This reaction isn't going by changing the ...
0
votes
0answers
28 views

Why is the bottom white in a lucas test?

Consider this positive result from the Lucas test (adding $\ce{ZnCl2/HCl}$ to a tertiary alcohol): My question is quite straightforward but I can't find the answer. What is in the top layer (thin and ...