Answer:
If one of the reactants is a solid, only the particles at the surface can partake in the reaction. Breaking the reactant into smaller pieces increases the surface and more particles are exposed to the reaction mixture. This results in an increased frequency of collisions and therefore a faster rate of reaction
Answer:
The carbocation intermediate reacts with a nucleophile to form the addition product.
Explanation:
The reaction of benzene with an electrophile is an electrophillic substitution reaction. Here the electrophile replaces hydrogen. There is no formation of carbocation as intermediate in the reaction. Infact there is transition state where the electorphile attacks on benzene ring and at the same time the hydrogen gets removed from the benzene. So a transition carbocation is formed.
The general mechanism is shown in the figure.
i) Attack of the electrophile on the benzene (which is the nucleophile)
ii) The carbocation intermediate loses a proton from the carbon bonded to the electrophile.
iii) the carbocation formation is the rate determining step.
iv) There is no formation of addition product.
Thus the wrong statement is
The carbocation intermediate reacts with a nucleophile to form the addition product.
Volatile organic solvents consists of variety of chemical gases which are emitted in form of solid or liquids.
Everyday household products also emit these compounds which includes wax, paints which are applied on walls of the house.
These compounds are called as volatile substance because they have higher vapour pressure, and lower boiling points than as compared to the other compounds.
Common emissions sources of VOCs include dry cleaners; auto body shops; cars, trucks, and buses etc.
Volatile organic solvents play a vital role in the creation of ground-level ozone. Ground-level ozone can irritate the eyes, nose, and throat, and can aggravate asthma and other lung diseases, including bronchitis.
To know more about Ozone, refer to this link:
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