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(a)
Interpretation:
Number of plates and plate height and resolution has to be calculated.
Concept Introduction:
Expression to compute number of theoretical plate is as follows:
Here,
It has been found that greater the equilibration steps narrower will be band so this suggests
Expression to compute plate height is as follows:
Here,
(a)
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Explanation of Solution
Expression to compute number of theoretical plate is as follows:
Substitute
Thus, number of theoretical plate is
Expression to compute
Substitute
`
Thus, plate height is
Value of
Expression to compute resolution is as follows:
Substitute
Thus, value of resolution is 1.3.
Ratio of plate height is calculated as follows:
Reason behind such massive plate height difference is that rate of longitudinal diffusion is much more rapid in gas than in liquid chromatography.
(a)
Interpretation:
Number of plates and plate height for peak 11 and resolution for peaks 16 and 17 has to be calculated.
Concept Introduction:
Expression to compute number of theoretical plate is as follows:
Here,
It has been found that greater the equilibration steps narrower will be band so this suggests
Expression to compute plate height is as follows:
Here,
(a)
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Explanation of Solution
Expression to compute number of theoretical plate is as follows:
Substitute
Thus, number of theoretical plate is
Expression to compute
Substitute
`
Thus, plate height is
Value of
Expression to compute resolution is as follows:
Substitute
Thus, value of resolution is 1.3.
(b)
Interpretation:
Extent of larger plate height has to be calculated and reason behind such massive plate height difference has to be calculated.
Concept Introduction:
Refer to part (a).
(b)
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Explanation of Solution
Ratio of plate height is calculated as follows:
Reason behind such massive plate height difference is that rate of longitudinal diffusion is much more rapid in gas than in liquid chromatography.
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Chapter 22 Solutions
Exploring Chemical Analysis
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- Please solvearrow_forwardRank the compounds in each group below according to their reactivity toward electrophilic aromatic substitution (most reactive = 1; least reactive = 3). Place the number corresponding to the compounds' relative reactivity in the blank below the compound. a. CH₂F CH3 F b. At what position, and on what ring, is bromination of phenyl benzoate expected to occur? Explain your answer. :0: C-O phenyl benzoate 6.Consider the reaction below to answer the following questions. A B C NO₂ FeBr3 + Br₂ D a. The nucleophile in the reaction is: BODADES b. The Lewis acid catalyst in the reaction is: C. This reaction proceeds d. Draw the structure of product D. (faster or slower) than benzene.arrow_forwardPart 2. A solution of 6.00g of substance B in 100.0mL of aqueous solution is in equilibrium, at room temperature, wl a solution of B in diethyl ether (ethoxyethane) containing 25.0 g of B in 50.0 mL 9) what is the distribution coefficient of substance B b) what is the mass of B extracted by shaking 200 ml of an aqueous solution containing 10g of B with call at room temp): i) 100 mL of diethyl ether ii) 50ml of diethyl ether twice iii) 25ml of diethyl ether four timesarrow_forward
- - Rank the following groups of compounds from most acidic (1) to least acidic (4). Place the number corresponding to the compound's relative rank in the blank below the structure. a. NO₂ NO₂ CH2CH2CH2CH2OH CH3 CH3CH2CHOH CH3CH2CH2CH2OH NO₂ CH3CHCH2CH2OH b. OH OH CH₂OH CO₂H HC CN CN CNarrow_forwardGive the major organic product(s) of the following reactions or sequences of reactions. Show all relevant stereochemistry a. H MgBr 1. ether 2. H₂O* 4 COH b. 1. LIAIH, ether 2. H₂O Choose the best reagent(s) for carrying out the following conversions from the list provided below. Place the letter of the best choice in the blank to the left of the conversion. Reagents may be used more than once. a. 1. CH3MgBr, ether 2. H3O+ NaOH b. 1. PBr3 2. C. 2. 1. (CH3)3SiCl, (CH3CH2)3N CH3MgBr, ether 3. H₂O*+ 2. H3O+ e. 1. p-TosCl, pyridine f. نها g. 2. NaOH CrO3, H₂SO4, H₂O 1. NaBH4, ethanol 2. H30* h. PCC, CH2Cl2 Ovoldo-6 a. b. OH OH H OH O any organicarrow_forwardDetermine the rate law for sodium thiosulfate from the following data: [Na2S2O3] Time (s) 0.0318 230. 0.0636 57.5arrow_forward
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