In silica gel chromatography, which compounds elute first? A-The least polar B-Those with ionic functional groups C-Those with the lowest boiling point D-Those with the highest molecular weight E-The most polar

Q: Distillation Curve 110 100 90 80 70 60 50 40 20 40 60 80 100 120 Volume (drops) 14. Based from the…

A: A multiple choice question based on distillation process, which is to be accomplished.

Q: Which type of chromatography is paper chromatography? a. Liquid-liquid chromatography b.…

A: Chromatography is a technique used for separating components in a mixture. Paper chromatography is a…

Q: Which would affect the accuracy of a melting point determination? Using a thermometer that has not…

A: Melting point is the temperature at which solid converts into liquid.

Q: Is thin-layer chromatography a type of normal-phase chromatography or a type of reverse-phase…

A: Given that, Thin-layer chromatography is a type of normal-phase chromatography or a type of…

Q: The key to a successful HPLC procedure is good sample separation which is represented by a clean…

A: In this question, we have to choose the correct option from the given options.

Q: It is not of the solute property detector used in HPLC is: a. Refractive index detector b. UV…

A: Mixture components are estimated using HPLC detectors. The actual separation in HPLC (High…

Q: Which technique measures secondary structure? a. Size exclusion chromatography b. Circular Dichroism…

A: The secondary structure is formed by bending of the 1o structure. In this, an intermolecular force…

Q: Write the dispersion medium and dispersed phase in milk.

A: Phase of solution in which colloidal particles are present termed as dispersed phase. The phase in…

Q: 1: What is the molar concentration of a 4% solution of borax? (sodium tetraborate decahydrate,…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Regarding TLC: a) Compounds A and B are analyzed side-by-side by TLC on silica gel. The developed…

A: Thin layer chromatography is a type of adsorption chromatography for the separation of components…

Q: What is a guard column and why is it used in HPLC but not in GC systems?

A: A guard column is a protective column or cartridge installed between the injector and the…

Q: Please explain to me what is the valency factor (n-factor) of Potassium Bipthalate (C8H5KO4)

A: Potassium Bipthalate - It is also known as potassium hydrogen phthalate. It is the monosodium salt…

Q: is 77.18%. The melting point range of crude benzoic acid = 112-119°C and the melting point range of…

A: The question is based on the results obtained after recrystallizing benzoic acid. the yields and…

Q: In thin-layer chromatography on silica gel TLC plates, which of these is true? a. More polar…

A:

Q: What is done if the solid contains a colored impurity?  Know the proper funnels and equipment to…

A: The procedure is about purification through recrystallization process.

Q: Which of the following is not a method for measuring reaction rates? A) total pressure B) thin layer…

A: A multiple choice question based on measuring reaction rate, which is to be accomplished.

Q: What should we use a) to measure 5.50 g of CuSO4·5H2O: ______________________ b) To dry CuSO4 over…

A:

Q: There are two forms of HPLC – normal phase HPLC and reversed phase HPLC. In normal phase HPLC, the…

A: HPLC stands for High performance liquid chromatography, it is technique used to separate components…

Q: Question 9 Which one of the following statements is FALSE? In a TLC experiment with amino acids, if…

A:

Q: It is usually recommended to clean the glass surfaces of a refractometer with ethanol or isopropyl…

A: Refractometer is a device that measure the degree to which light changes direction called as angle…

Q: What is the stationary phase in thin layer chromatography and its polarity? Choices: Cellulose -…

A: In thin layer chromatography(TLC) silica is used as stationary phase. Silica is a polar adsorbent .

Q: please answer hurry up ..... What kind of “cation and anion exchanger resins” can be used in the…

A: Ion exchange chromatography useful for separation of ionic compounds. Separation is based on…

Q: What is the purpose of performing a blank titration in the assay of ibuprofen?    A. To determine…

A:

Q: Choose the separation techniques that rely on differences in boiling points. A. Simple distillation…

A: To identify: The techniques which use the difference in boiling point for separation.

Q: A melting "point" analysis is a bit of a misnomer: how so? What do we measure when doing such an…

A: By the term melting point, we mean that it is a fixed point of temperature where a substance or…

Q: The uses of thin layer chromatography are: 1) To identify unknown compounds 2) Determine purity of…

A: The correct answer is given below.

Q: Is the mobile phase for your TLC and column chromatography more or less polar than the stationary…

A: Mobile phase: It is the phase that is getting movement in the column. The sample that has to be…

Q: Chromatography is a separation technique. What is the physical or chemical basis for separation of…

A: The separation relies on the relative affinity of compounds towards both the phases. The compounds…

Q: For each of the following statements, answer TRUE or FALSE and explain your answer briefly.   It…

A: True Potassium Dichromate solutions (235 - 430 nm)The most widely recognised reference material for…

Q: describe different type of degasser in HPLC system, and why degassing is important in the middle of…

A: Degasser is  very useful in HPLC .the main use of degasser in HPLC are  hellium sparging, sonication…

Q: In chromatography, the compound that is least soluble in the mobile phase a) Travels the furthest…

A: When a compound is dissolved in the mobile phase it is carried along the direction of flow, but when…

Q: What physical property determines which solvent sinks to the bottom when performing a liquid-liquid…

A: A separating funnel is used for carrying out liquid liquid extractions. When two liquids are shaken…

Q: Assume that you are provided with an 18 cm fractionating column having an HETP of 6 cm to distill a…

A: To determine the composition of first drop of distillate

Q: A measurment for the  Lambda-max for a colored solution is 671 nm with a very high Absorptivity.…

A: The frequency of light is the ratio of the standard speed of the light in a vacuum to the light's…

Q: Briefly explain the principle behind the following techniques: (a) ion-exchange chromatography (b)…

A: Question is based on chromatography techniques:

Q: What type of chromatogtaphy (RPLC, NPLC, HILIC, SEC, IEX) could be used for analyzing monosodium…

A: The answer is attached below-

Q: What kind of “cation and anion exchanger resins” can be used in the columns of an ion chromatography…

A: Ion chromatography is a type of liquid chromatography that is used to measure the concentration of…

Q: What is the difference between gel filtration and gel permeation?

A: Gel Filtration Chromatography is a technique which use to sperate out the molecules by there the…

Q: Which is correct?     Random errors affect accuracy and systematic errors affect precision.…

A: Since you have posted multiple questions in a session, we are entitled to answer first question…

Q: How does capillary zone electrophoresis  (CZE) works.

A: Capillary zone electrophoresis is a technique used for separating the individual components from a…

Q: Which type of chromatography is paper chromatography? a. Liquid-liquid chromatography b.…

A: Chromatography is a technique used to seperate components from a mixture. Here we have to tell what…

Q: More polar molecules move more slowly through silica than less polar molecules. Why is silica gel…

A: In methyl orange is polar since it contains the ionic part of the molecule (SO3-Na+). However, in…

Q: Two group of students wish to analyse caffeine content in tea samples. Group 1 performed the…

A: Chromatography is the laboratory technique for the separation and isolation of a variety of samples…

Q: the stationary phase used in the given setup is silica, which is more polar between A or B?

A: Given is chromatographic colum and this process is used to seprate two or more components.

Q: Name types of gels (sieving matrix) that may be used for gel filtration chromatography and discuss…

A: The types of gels for gel filtration chromatography include, Dextran Polyacrylamide beads/ agarose…

Q: why do we have to order samples (from least concentrated -most concentrated) when measuring the…

A: A question based on qualitative analysis, which is to be accomplished.