Give a structural formula for the carbocation intermediate that leads to the major product in the reaction of hydrogen chloride
with 2−methyl−2−butene.
1 answer:
Answer:
The major product forms in this reaction is 2-chloro-2-methylbutane
Explanation:
HCl reacts with 2-methyl-2-butene by forming a carbocationic intermediate followed by addition of chloride ion to the carbocation.
The carbocationic intermediate is formed in intermediate step should be most stable i.e. it should have highest number hyperconjugative hydrogen atoms.
The major product forms in this reaction is 2-chloro-2-methylbutane.
Reaction mechanism and structural formula of carbocation is shown below.
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Answer
7665 years
Procedure
Let N₀ be the amount of carbon-14 present in a living organism. According to the radioactive decay law, the number of carbon-14 atoms, N, left in a dead tissue sample after a certain time, t, is given by the exponential equation:
N = N₀e^(-λt)
where λ is the decay constant which is related to half-life (T1/2) by the equation:
Here, ln(2) is the natural logarithm of 2.
The percent of carbon-14 remaining after time t is given by N/N₀.
Using the first equation, we can determine λt.
The half-life of carbon-14 is 5,720 years, thus, we can calculate λ using the second equation, and then find t.
Solving the second equation for t, and using the λ we have just calculated we will have
t= 7665 years