Q: Why would a solvent with a very high boiling point be inappropriate for a recrystallization?…
A: There are some ideal conditions in selecting the solvent for crystallization. Among which the…
Q: The liquid-liquid extraction is the classical technique in chemistry to isolate a target component…
A: Liquid-liquid extraction is also known as solvent extraction in which compounds are separated based…
Q: Acetophenone is soluble in diethyl ether, isopropanol, and nhexane. Identify and justify the most…
A: The selection of the solvent for the UV-Vis characterization based on their UV cutoffs. The UV…
Q: Why was gravity filtration used instead of evaporation to isolate the calcium carbonate?
A: Calcium Carbonate is white, odorless powder or colorless crystals. Practically insoluble in water.…
Q: Define the terms theoretical plate, plate height, and number of plates in chromatography. Discuss…
A: Theoretical plates: Theoretical plates represent a hypothetical division of chromatographic columns,…
Q: What effect does the presence of impurity have on the melting point? Can the amount of impurity be…
A: Colligative properties are those that depends on the amount of solute present in the solution. The…
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: Chemistry Discuss the possible consequences of injecting the concentrated injectable suspension…
A: Subcutaneous means under the skin. In this type of injection, a short needle is used to inject a…
Q: Which statement is true? Statement 1: In a paper chromatography that uses a cellulose-based…
A: Given : Two statements are given To find : True statements Solution : Chromatography is a…
Q: How to determine the number average molecular mass of a polymer by: 1. Gel permeation…
A: Polymers are molecules with a high molecular mass and a large number of repeating structural units.…
Q: Sometimes, the melting point range of a sample does not correspond exactly to that recorded in the…
A: Definition: The melting point of solid is defined as the temperature at which the solid exists in…
Q: Coprecipitation that involves foreign particles? a. Inclusion b. Mechanical entrapment c. Surface…
A: Co-precipitation :– The concurrent precipitation of more than one compound from an solution.…
Q: Co-Perciptation
A: In this question we have to explain the following types of Co-Perciptation 1- Surface Adorption 2…
Q: Why is filtration of a gelatinous precipitate done while the solution is still hot?
A: The filtration of a gelatinous precipitate done while the solution is still hot.
Q: why does the observed meltin point change over the course of distillation
A: Distillation is the process of heating of liquid until it boils then condensing and collecting the…
Q: You measured the melting point of the recrystallized product Ttal=142,2-145,5°C. Based on this…
A: Given that, Melting point of recrystallized product = 142.2℃ to 145.5℃ .
Q: . After the reflux period, what substances are pre n Whu will the density of the organic phase be…
A: In organic chemistry, Reactants are mixed in a solvent media, and products are obtained. The final…
Q: Describe chromatography analysis, the two essential phases used in paper chromatography and provide…
A: Chromatography is an analytical technique used for the identification, separation and purification…
Q: In the paper chromatography experiment, the filter paper is the stationary phase and water is the…
A:
Q: Enumerate at least two important things to do to maximize yield when using vacuum filtration in the…
A: Aspirin is produced chemical synthesis from salicylic acid, through acetylation with acetic…
Q: In the paper chromatography experiment, the filter paper is the stationary phase and water is the…
A: Paper chromatography is defined as tbe technique used to test the purity and impurity of the…
Q: Analytical Chemistry Describe the formation of plasma and its functions in ICP-MS technique
A: A plasma is essentially an ionised gas, consisting of positively-charged ions and free (unbound)…
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: 1.An organic compound is made and needs separating from the reaction mixture and impurities. The…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: Water cannot be utilized as an absorbing liquid in the synthesis of sulphuric acid because its…
A: The statement given is, "Water cannot be utilized as an absorbing liquid in the synthesis of…
Q: What would happen if the Erlenmeyer flask containing the crude dba in EtOH undergoing…
A: As we know during recrystallisation we dissolve our product into suitable solvent such as here, dba…
Q: What are desirable properties of a gravimetric precipitate?
A: The most favored properties of gravimetric precipitate are as follows,
Q: Based on your results, how does rate of crystal growth effect the purity of a recrystallized…
A: When the crystals of any compound are impure due to any reason. They can be recrystallized by the…
Q: A student trying to determine if a white solid is a true hydrate heats the sample and finds that…
A: The explanation is about true hydrate or not given below.
Q: Which of the following cannot be used as adsorbent in column chromatography? a. Silica gel…
A:
Q: In paper chromatography, A) it can be used to determine the progress of a reaction. B) separation is…
A: The correct answer about chromatography is given below
Q: factors
A: unit of measure called the partition coefficient. The greater the solubility of a substance, the…
Q: Why is there a change to the way the dye molecules partition between two solvents when ethanol is…
A:
Q: Isopropanol and water are miscible, meaning they can be combined in any ratio. So why were they…
A: 1. Isoprapanol and water are miscible due to formation of intermolecular hydrogen bonding. 2. But,…
Q: Explain how manufacturers inhibit the physical adsorption of polar analyte species on the silicate…
A: Column used in column chromatography is made up of borosilicates. Silica is polar in nature due to…
Q: Why is distillation of cyclohexanol using acid catalyst phosphoric acid a better technique to purofy…
A: The reaction of cyclohexanol using acid catalyst phosphoric acid is directed in a distillation…
Q: A student obtained a solid product in laboratory synthesis. To verify the identity of the solid, she…
A: By merely looking at any compound we cannot identify what its structure is. Melting point is an…
Q: Help me.... Explain the principles of gel permeation chromatography in Polymer, what is the…
A: Gel permeation chromatography is a powerful analytical technique used to separate dissolved…
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: Filter paper is usually a poor material on which to powder a solid sample before introducing it…
A: Filter paper is not used as material on which substance can be powdered before its addition into…
Q: Explain why pure water or pure methanol (or acetonitrile) cannot be employed as the mobile phase in…
A: Pure water or pure methanol cannot be employed as the mobile phase in reverse-phase liquid…
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: All are properties of ideal solvent for recrystallization except: • Dissolves the sample when hot •…
A:
Q: Enlist the solvents used as stationary and mobile phases in Gel Permeation Chromatography
A: Gel filtration chromatography can be used for separating compounds such as small molecules,…
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.
Step by step
Solved in 2 steps
- Please answer part b and c. Thanks!When using UV-visible spectrophotometry to analyze solution concentration, a calibration curve is constructed. In this plot _______. (Select all that apply.) the graph is expected to be a straight line the graph is expected to show an inverse relationship absorbance is plotted on the y-axis molarity is plotted on the y-axis path length is plotted on the x-axisJustify the adsorbent should be insoluble in the solvent.
- There are few types of glue in the market, and the two most common glues are based on formaldehyde glue and epoxy glue. Show the main reactions for both glues. Which one is most used for heavy duty adhesion application, explain your reasons?Select the best answer. Briefly explain the selection. A mechanism is an acceptable explanation.Compare the column material of GC and LC in terms of the “functional groups” taking place on the column surface or on the packing material? Draw chemical structure of the active groups and classify them according to their polarities.