what ppe and engineering controls should be used when working with any dilution of acetic acid? uta lab
1 answer:
Following measures should be taken while working with any dilution of acetic () acid :
One should wear chemical resistant gloves to protect hand from splash during dilution.
Chemical resistant apron and chemical splash goggles is mandatory to wear to protect one from effects of acetic acid on body.
Go through Safety Guidelines manual whenever diluting concentrated acid.
PPE is mandatory to wear when acetic acid is handled in concentrated state before dilution.
If the area where experiment is performed is not ventilated the wear respiratory equipment.
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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.
