In the Addition of Hydrogen Bromide to Alkynes in the Absence

question 31

Multiple Choice

In the addition of hydrogen bromide to alkynes in the absence of peroxides, which of the following species is thought to be an intermediate?

• A) vinyl anion
• B) vinyl cation
• C) vinyl radical
• D) carbene
• E) none of the above

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Definitions:

Confidence Interval

It expresses the degree of uncertainty or certainty in a sampling method, represented as a range within which an estimated parameter is expected to lie.

Alpha (α)

In statistics, it represents the significance level, a threshold determining the probability of rejecting a true null hypothesis.

Population Standard Deviation

Measures the dispersion of a set of data points in a population from its mean, indicating how spread out the data points are.

Interval Estimate

An estimate of a population parameter that provides a range of values believed to contain the parameter with a certain level of confidence.