Why did one solvent allow the yellow dye to be eluted, and why was another solvent used to elute the blue color dye?

Q: What are the consequences if an EDTA tube is filled first before a red top tube?

A: Red top tube This tube is plain glass. It does not contain any anticoagulants, preservatives, or…

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: How can you tell whether a complexion is optically active?

A: The activity of a complex can be found out by observing the structure of the complex and also…

Q: 0.2 mL of 1% azide was added to 0.2 mL of 1% dye. What is the concentration of the dye now?

A: Given: Percentage concentration of solution 1 = 1 % Volume of solution 1 = 0.2 mL Percentage…

Q: Which form if EDTA is used in any analytical experiment? Why?

A: Ethylenediaminetetraacetic acid (EDTA) is used as a metal-chelating agent. It is a chemical that…

Q: n the blueprint expreiment, what would happen if you did not allow the paper to dry for 20 minutes…

A: The blueprint process was invented by the astronomer John Herschel in 1842. This works on the…

Q: Why phenolphthalein cannot show any colour in pure water media?

A: Given: Phenolphthalein does not show any color change in pure water.

Q: A student has a purple dye mixture on which she performs a TLC experiment with a silica gel plate…

A: TLC experiment is performed on the mixture of purple dye with the help of silica gel plate and…

Q: 3. Why was DMSO used as the solvent in the experiment?

A: Synthesis of nerolin is an example of Williamson ether synthesis. DMSO, HMPA and alcohols that…

Q: more soluble or less soluble

A: Retention factor of a particular material is the ratio of distance moved by the solute above the…

Q: chelating agents are ineffective in binding and removal of methylated mercury complexes?

A: Chelating agents are the ligands that form complexes with metal ions to form stable water-soluble…

Q: Enumerate the ions that form colored complexes during the confirmatory test. Identify their…

A: Qualitative analysis of group III cations is being performed in the experiment. Group IIIA contains-…

Q: What is the Assay methods  of phenazopyridine?

A: Phenazopyridine is one of the drugs that is used to cure urinary tract infections. It is also used…

Q: Discuss the significance of the following processes and what constituent is being determined: a.…

A: The significance of the processes and presences of  constituent is given below.

Q: What would be the result if copper (I) chloride were added to the diazonium salt prepared in the…

A: Given: Copper (I) chloride is added to the diazonium salt.

Q: 0.2 mL of 10% sodium azide was added to 1.8 mL of 0.2% of YGM. What is the concentration of azide…

A: Given,  Volume of sodium azide V1 = 0.2 mL Concentration of sodium azide C1 = 10% = 0.01 Volume of…

Q: Under the conditions of your experiment, what is the stoichiometry of the reaction between EDTA and…

A: • Since we know that EDTA solution can be added to Magnesium salts and form an Mg-EDTA comolex •…

Q: In order to analyse mercury with AAS, which method will you prefer?

A: Explaination as below

Q: Explain the difference between absorption and adsorption in natural dyes. Use sketches to clarify…

A: Please find your solution below : Absorption is the process in which absorbed material is uniformly…

Q: (b) AgNO3 test : Red precipitate formed , which dissolved in dilute HNO3 BaCl2 test : Yellow…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: . If an unknown forms a silver mirror in the Tollens test, forms a purple color in the Schiff test,…

A:

Q: Discuss the principles of the colorimetric and enzymatic methods for quantitating uric acid.

A: Generally there are two methods of quantitating uric acid . Colorimetric method  Enzymetic method

Q: Why is hydrochloric acid added to the precipitated copper metal near the end of the procedure?

A: Step 1) Copper is an element which is chemically combined with the variety of compounds in nature.…

Q: how might chromatography be used to analyze the composition of the dye in a marker?

A: Chromatography is a method for analyzing mixtures by separating them into the chemicals from which…

Q: Would a component with a larger Rf value have a higher or lower affinity for the mobile phase…

A: TLC is an analytical technique which can be used to monitor the organic reaction transformations.…

Q: justify the ingridients of benadryl cream

A: The Benadryl cream is actually an itch stopping cream. It is used to relieve itching and pain…

Q: Many ink dyes can be separated by the technique of___________ chromatography

A: Thin Layer Chromatography is a method for separating non-volatile substances. The separation…

Q: What happens to emission intensity when KI is added to a fluorescein solution and why?

A: Fluorescence quenching is a process that decrease the intensity of emitted light from fluorescein.

Q: How might the Rf values of colorless substances be determined? That is, how could the colorless…

A: we use locating agents which reacts with the substance to form colored compound

Q: Which of the following is true for EDTA solution? A. It always needs to be adjusted (it needs to be…

A: A multiple choice question based on types of standard solution, which is to be accomplished.

Q: Discuss how sample concentration is determined using the standard addition method. What limitation…

A: Standard addition method includes the eliminate matrix effects that means it assess whether a sample…

Q: Is blue color the appearance of resazurin in a reduced state?

A: ANSWER IS DISCUSSED BELOW :

Q: What is the best extraction technique for the recovery of ferulic acid from wheat and rye bran?

A: Ferulic acid is chemically hypo cinnamic acid. It is usually found in plant cell wall as phenolic…

Q: Why to use acid or base for the development of fluorescent carbon dots?

A: Carbon-Dots are a kind of zero-dimensional nanomaterials. They are environment friendly and possess…

Q: why is there bubbles formed when aniline was added to concentrated HCl?

A: Aniline is basic in nature and HCl is an acid. So, acid-base reaction will take place.

Q: What is color index of dyes?

A: Complicated and confusing chemical names of dyes leads to the practice of using names which are…

Q: Why is tin used to encapsulate a sample for combustion analysis?

A: Combustion analysis is a method used to estimate the elemental composition of pure compound by…

Q: What is the detection limit of GC-FID in terms of analyzing samples such as water with oil

A: The full form of GC-FID is Gas chromatography-Flame ionization detection. Gas Chromatography is one…

Q: 0.122 mg of Crystal Violet you synthesized was dissolved in 100 ml of solvent. The absorbance was…

A: The expression of the absorbance is shown below: A = logI0I where; A = absorbance I0 = initial…

Q: Question 10 What does Sodium bicarbonate do in water softening? Use the editor to format your answer…

A: Sodium bicarbonate is used for water softening.

Q: Why must the sodium stannite which is used in the identification of bismuth be prepared just prior…

A: In the identification, a stepwise procedure is followed to detect a particular element.

Q: What is the Assay methods  of phenazopyridine ? With illustration.

A: Phenazopyridine is one of the drugs that is used to cure urinary tract infections. It is also used…

Q: Use the equation for your straight line fit (from the experiment) to determine the concentration of…

A: given : absorbance =0.295 lambdamax=1.00 cm

Q: What was the evidence for the reaction: Mg + O₂ ----> MgO production of a blue precipitate metal was…

A: In this reaction , Magnesium metal (Mg) is reacting with oxygen gas ( O2 ) to produce MgO .  This…

Q: 1. Illustrate/draw the reaction involved in the Wijs titration

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question of…

Q: With a purple dye combination and acetone as the solvent, a student conducts a TLC experiment on a…

A:

Q: Is it possible to prepare a 17% dye solution from a 4% stock dye solution? Explain your answer.

A: Given : Stock solution with concentration = 4 % (Assuming by mass) And concentration of solution to…

Q: this experiment is all about the synthesis of phthaleins, where phthalic anhydride is added to a 0.1…

A: Indicators: these are the substances that changes color when added to acidic or basic solutions.…

Q: Is it possible to prepare a 17% dye solution from a 4% dye solution? Explain.

A: If the solution is too weak in terms of concentration, we can evaporate some of the solvent to make…

Organometallic compounds of d-block elements

The transition metals can form complexes since they have vacant d orbitals. They are also termed Coordination compounds. The organometallic compounds of the transition metals could be used as catalysts as well as reagents. For example, organocadmium, organozinc, organocopper, Grignard are used as the reagents for several reactions. Most of the complexes of organo transition metals are used as catalysts for many organic transformation reactions.