Column Chromatography Chromatographic Separation Fresh solvent = eluent Mobile phase Sample components A Column packing Stationary phase suspended in a solvent (Mobile phase) Porous disk Flowing mobile phase B elutes A elutes chromatogram

Q: 1. Sampling of solutions of approximately 5% is normally placed in a NaCl cell made up of metal…

A: Answer of above questions are  given below with explanation.

Q: A round-bottomed flask used in a heated reaction is always clamped at what part on the flask?

A: A round -bottomed flask used in a heated reaction is always clamped. What part of the flask clamped…

Q: Would it be easy to determine the molecular weight of starch by measuring the freezing point…

A: Introduction A polymeric carbohydrate known as starch or amylum is made up of many glucose units…

Q: 1. It measures how good chiral molecules are able to rotate plane, polarized light. A. Specific…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: An analytical separation technique based on the differences in volatility of compounds. A.…

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Q: how you would change your procedures to obtain the most efficient method for testing your pipetting.…

A: Pipetting is a important part to get accuracy of a analysis.

Q: 1.Please define the types of adsorption, explain the interactions and give examples for each type.

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Q: The test can distinguish between the flowing compounds is

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Q: What is the effect of weighing a recrystallized organic solid which is not completely dried to the…

A: Percentage yield is calculated  by dividing actual yield to theoretical yield and multiplying it by…

Q: Match Column A with Column B. As the molar absorptivity increases, the concentration of caffeine_ A.…

A: Since you have posted questions with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: Explain the problem

A: The solubility of compounds can be determined on the basis of their polarity. It uses the principle…

Q: Between Whatman No. 1 filter and 3% KCI solution, which is more polar?

A: Polar compound are those in which there is electronegativity difference between the atoms.

Q: What is the principle of he milk and vinegar experiment and Why is skimmed milk tends to give the…

A: Ans. This plastic-like substance forms from a chemical reaction between the milk and vinegar.…

Q: Fiskesjo, is one of the pioneers of allium test. Diagram his procedure and a recently conducted…

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Q: Questions 49 and 50. Thhe rate of the reaction A- B with re- spect to A is 1.6x10 moldm 's' when the…

A: It is a second order reaction . Rate =k [A] 2

Q: Using this table for the standard durve of cobalt (II) solution in UV Vis Molarity (M) Absorbance…

A: Given data L=10 cm we know that Beer Law is  Absorbance=ε×M×Lwhere : M=Molarity , L=Length ,…

Q: Explain the following terms. a) Calibration curves b) Chromophores

A: A calibration curve is used to assesshow well the classifier is calibrated. H. How different are the…

Q: Why do banana and apple show discoloration when it left out in the open air for some time?

A: We know that banana and apple show discoloration when it left out in the open air for some time, or…

Q: 5. Two food colors, A and B, have similar structure and similar polarities and a chromatogram for…

A: Chromatography is the analytical technique used to separate the mixture of compounds. The mixture or…

Q: The major difference between wood dyes and wood stains is the final location of the applied coloring…

A: Dyes and stains are shading specialist utilizes in material business like substantial shading or…

Q: Which part of sodium stearate, head or tail, is more likelyto be solvated by water?

A: The hydrocarbon part (tail) of sodium stearate is non polar and hydrophobic in nature. It repels…

Q: Three sample, X (neutral), Y (basic), and Z (acidic), were mixed and dissolved together in…

A: Dissolve the mixture in dichloromethane and separate the organic and aqueous layer using liquid…

Q: 1)Explain the peak order based on the structure of the compounds in an hold: paracetamol,…

A: Ans 1. In High-Performance Liquid Chromatography (HPLC), the elution order of compounds is…

Q: Complete the fission reaction of plutonium-239 in + 23°Pu → 13251 + + 33n 94 a. 34Xe 137 544 b. 103…

A: Given reaction is fission reaction of plutonium-239

Q: For separating the 9H-fluorene and benzophenone mixture, you used silica gel as your solid phase,…

A: Column chromatography is an analytical tool that is employed in the separation of the mixture of…

Q: Lo Na Br

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Q: Chopping an onion breaks cells and releases compounds that give the smell of onions, and one…

A: Chopping onion releases five different compounds they are: 1) Propanal  2) Ethanol  3) 2-methyl…

Q: they have a binding site for X with a Kd (dissociation constant) of 10⁻⁵and 10⁻⁸ M, respectively.…

A: For comparison association constant of each is determined. The one having highest value of…

Q: xplain in details the advantage and disadvantage of Fehling test  and tollen's test

A: ADVANTAGE AND DISADVANTAGE OF FEHLING TEST AND TOLLEN'S TEST

Q: 9. Alumina coated TLC plate and a non-polar mobile phase were used to separate A, Band C substances.…

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Q: 5. Describe another technique you could use to separate vanillin and ortho-vanillin. Draw a diagram…

A: It is required to separate vanilin and ortho-vanilin

Q: 3. A student separated an unknown mixture of ions using the procedure of Part A. When the spots were…

A: The spotting capillary is required for putting a drop of solution on chromatography paper due to…

Q: What is Solubility  of phenazopyridine in water?acidic media? basic media ?and what is most common…

A: The ability of a substance to mix with another substance to form a homogeneous mixture is called its…

Q: Question 1. a) Describe the effect of conjugated chromophores in a molecules UV-Vis absorption.

A: Conjugation is the system in which one single bond is combined to one double in a long chain. Or…

Q: 1. What will happen if: (a.) You heat a pinch of table salt in a clean, dry test tube for two…

A: Different salts show different reactivity with heat. It depends on the cation in the salt. When that…

Q: In polarimetry, indicate the correct explanation of the drawing. (1). No light reaches the eye,…

A: The objective of the question is to identify the correct explanation of the drawing in the context…