Column chromatography Study guides, Class notes & Summaries
Looking for the best study guides, study notes and summaries about Column chromatography? On this page you'll find 191 study documents about Column chromatography.
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![AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2023.](/docpics/5377714/664baaa5e2ec7_5377714_121_171.jpeg)
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AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2023.
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AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2023. CH4 + 2 O2 → CO2 + 2 H2O 1 AO2 
5.7.1.3 
Question Answers Extra information Mark AO / 
Spec. Ref. 
01.2 
hydrocarbon molecules in petrol 
have fewer carbon atoms than 
those in diesel 
petrol has a lower boiling point 
(range) than diesel 
allow converse throughout 
allow petrol is more flammable 
than diesel 
allow petrol is less viscous than 
diesel 
1 
1 
AO3 
5.7.1.3 
Question Answers Extra information M...
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Bio 205 Exam 1 Exam Questions With Complete Answers.
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basic units of life that compose all living things - Answer-Cells 
characteristics shared by all cells - Answer--Cells are composed of 4 major macromolecules 
-Genetic material is carried and stored in the form of DNA 
-DNA is transcribed into RNA and RNA is translated into proteins 
-Their appearance, behavior, and function is dictated by proteins 
-They reproduce on their own 
-Respond to stimuli 
-Adapt to their environment 
-Are highly organized 
-Maintain a constant internal environment 
Ho...
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Topic 4 – Chromatography (100% Correct)
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Mobile Phase correct answers Liquid or gas that flows through a chromatography system 
 
Stationary Phase correct answers The solid or liquid phase of a chromatography system on which the materials to be separated are selectively adsorbed. 
 
Adsorbent correct answers Solid material that takes up the particles of the substance passing through it 
 
Support correct answers A solid base which supports the liquid film in partition chromatography 
 
Development correct answers The process where mobi...
![Chem 241 UNC Exam 2 Correct Answers Latest Update](/docpics/5513719/665cdecb9e42e_5513719_121_171.jpeg)
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Chem 241 UNC Exam 2 Correct Answers Latest Update
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Extraction - correct answers Transfer of a solute from one phase to another 
 
Eluent - correct answers Fluid entering the column 
 
Partition Chromatography - correct answers Separation based on solute dissolving into stationary liquid 
 
Ion-Exchange Chromatography - correct answers Separation based on charge, stationary phase is made of either negatively or positively charged beads 
 
Size Exclusion Chromatography - correct answers Separation based on molecular size, larger molecules elute fi...
![Chem 241: Chp. 24: Gas Chromatography Questions And Answers Latest Update 2024](/docpics/5513829/665ce159eb792_5513829_121_171.jpeg)
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Chem 241: Chp. 24: Gas Chromatography Questions And Answers Latest Update 2024
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carrier gas - correct answers mobile phase gas in gas chromatography 
 
cold trapping - correct answers splitless gas chromatography injection technique in which solute is condensed far below its boiling point in narrow band at the start of the column 
 
electron capture detector - correct answers gas chromatography detector that is particularly sensitive to compounds with halogen atoms, nitro groups, and other groups with high electron affinity 
 
flame ionization detector - correct answers A g...
![CHEM 237 - Organic Chemistry Lab Final TAMU Already Graded A](/docpics/3619236/6529d06b36e31_3619236_121_171.jpeg)
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CHEM 237 - Organic Chemistry Lab Final TAMU Already Graded A
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CHEM 237 - Organic Chemistry Lab Final TAMU Already Graded A 
Separation by liquid-liquid extraction is based on 
a) compound's dielectric constant in 2 dif solvents 
b) # of theoretical plates in the separation 
c) use of phase transfer catalysts 
d) difference in boiling points of 2 liquids e) distribution of a compound between 2 immiscible phases e) Distribution of a compound between two immiscible phases. 
Preparative gas chromatography is often chosen over distillation as a means of separa...
![CHEM 241 Quiz And Review Questions Correct Answers Latest Update](/docpics/5513617/665cdc7379080_5513617_121_171.jpeg)
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CHEM 241 Quiz And Review Questions Correct Answers Latest Update
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What is the maximum amount of time a specific solute band will spend in the mobile phase of a chromatography column? - correct answers tm 
 
Which of the following is NOT an advantage of the use of OPEN TUBULAR columns (capillaries) over packed columns? - correct answers A. smaller plate height (H) 
 B. [[[[greater column capacity]]]] 
 C. faster flow rates 
 D. No A-term in the van Deemter equation 
 E. higher separation efficiency 
 
Which mode of chromatography separates compounds based on th...
![CHEM 237 - Organic Chemistry Lab Final Exam TAMU 100% Solved](/docpics/4822249/65ff50af639fd_4822249_121_171.jpeg)
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CHEM 237 - Organic Chemistry Lab Final Exam TAMU 100% Solved
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Separation by liquid-liquid extraction is based on 
a) compound's dielectric constant in 2 dif solvents 
b) # of theoretical plates in the separation 
c) use of phase transfer catalysts 
d) difference in boiling points of 2 liquids 
e) distribution of a compound between 2 immiscible phases - e) Distribution of a compound 
between two immiscible phases. 
Preparative gas chromatography is often chosen over distillation as a means of separation because gas 
chromatography 
a) is relatively inexpen...
![Chapter 24 Vocab Chem 241 UNC Questions And Answers Latest Update 2024](/docpics/5513808/665ce0e95e872_5513808_121_171.jpeg)
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Chapter 24 Vocab Chem 241 UNC Questions And Answers Latest Update 2024
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carrier gas - correct answers MP gase in GC 
 
cold trapping - correct answers Splitless gas chromatography injection technique in which solute is condensed far below its boiling point in a narrow band at the start of the column. 
 
electron capture detector - correct answers gas chromatography detector that is particularly sensitive to compounds with halogen atoms, nitro groups, and other groups with high electron affinity 
 
flame ionization dectector - correct answers gas chromatography detec...
![CHEM 237 Final Exam Review TAMU Questions and Answers with Expert Verified Solutions](/docpics/4822066/65ff492cd3f67_4822066_121_171.jpeg)
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CHEM 237 Final Exam Review TAMU Questions and Answers with Expert Verified Solutions
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Which reagent is not an oxidizing agent? 
a. NaOCl 
b. KMnO4 
c. K2Cr2O7 
d. CrO3 
e. H2O - H2O 
Which statement is false about preparing alkyl halide from alcohol with hydrogen halide? 
a. it is an SN1 reaction 
b. tertiary alcohols react faster than secondary alcohols 
c. the intermediate is a carbocation 
d. alkyl halide is soluble in conc. HCl 
e. in the reaction, the slowest step is the formation of a carbocation - alkyl halide is soluble in conc. 
HCl 
2‐Chloro‐2‐methylpentane was tr...
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