
a)
Interpretation:
The name of two straight chain hydrocarbons that is responsible for the elution of 2-pentanone has to be identified.
Concept Introduction:
Kovats retention index:
Retention index, I for linear
For a molecule of Octane,
For a molecule of Nonane,
The elution of compound between Octane and Nonane will have retention index between 800 and 900 is calculated using the formula,
Where,
To give the name of two straight chain hydrocarbons that is responsible for the elution of 2-pentanone
a)

Answer to Problem 24.AE
The elution of 2-pentanone takes place between Nonane and Decane, but very close elution takes places through Decane.
Explanation of Solution
The retention index of the compounds is based on the overall polarity phases and the selectivity that depends on the types of polar interaction offered by each column. For poly (ethylene glycol) column, the elution of 2-pentanone takes place between Nonane and Decane, but very close elution takes places through Decane.
b)
Interpretation:
The retention time of the compound has to be calculated.
Concept Introduction:
Kovats retention index:
Retention index, I for linear alkane equals 100 times the number of Carbon atoms.
For a molecule of Octane,
For a molecule of Nonane,
The elution of compound between Octane and Nonane will have retention index between 800 and 900 is calculated using the formula,
Where,
To calculate the retention time of the unknown compound
b)

Answer to Problem 24.AE
The retention time of the compound is
Explanation of Solution
Given,
The adjusted retention time of
The adjusted retention time of unknown along with
The retention time of the compound=
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Chapter 24 Solutions
Quantitative Chemical Analysis 9e And Sapling Advanced Single Course For Analytical Chemistry (access Card)
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