(a)
Interpretation:
The linear velocity
(a)
Explanation of Solution
The given column length is 4400mm.
The linear velocity is measured with unretained component travels at the solvent velocity as follows.
Therefore, the linear velocity
(b)
Interpretation:
The retention factor k for
(b)
Explanation of Solution
The given data is
Now, by using the following formula we can determine the retention factor of the given compound
Retention factor:
Therefore, the retention factor of
(c)
Interpretation:
The plate number N and plate height for
(c)
Explanation of Solution
The plate number is denoted by N and the plate height is denoted by H.
The plate number for
Next, the plate height for the given
Therefore, the plate number and the plate height for
(d)
Interpretation:
The resolution
(d)
Explanation of Solution
The resolution for the given compounds can be determined by using the following formula.
Now, plugging the corresponding values in the above equation and do some simple mathematical calculation to get the final answer as follows.
Therefore, the resolution
(e)
Interpretation:
The relative retention between the given compounds has to be found.
(e)
Explanation of Solution
The given compounds are
The given retention times for
The relative retention (
Now, plugging the corresponding values in the above equation and do some simple mathematical calculation to get the final answer as follows.
(f)
Interpretation:
The column length would be required for given a resolution of
(f)
Explanation of Solution
The given resolution is
The column length for the given column can be determined by using the following resolution formula.
Now, plugging the corresponding values in the above equation and do some simple mathematical calculation to get the final answer as follows.
Hence, a column length of
Now, to produce
Therefore, the required length of the given column is 13.6m.
(g)
Interpretation:
How might we improve the resolution from the given information has to be explained.
(g)
Explanation of Solution
- While we slowdown the flow rate there will be decrease in column height H and there will be increase in column number of plates N.
- By changing the solvent it will changes the relative retention.
(h)
Interpretation:
From the given conditions, if the plate number were unchanged then what would be the resolution has to be explained.
(h)
Explanation of Solution
The resolution can be determined by using formula.
Now, plugging the corresponding values in the above equation and do some simple mathematical calculation to get the final answer as follows.
Therefore, the expected change in the resolution is 0.91.
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Chapter 25 Solutions
Quantitative Chemical Analysis
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