Analyze the effects caused by various impurities on precipitate during the gravimetric analysis and suggest the measures to reduce the impact of these impurities.

Q: Consider 15 mL of an aqueous solution containing 2.0 g of an organic solute. If the distribution…

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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: Substance used as an adsorbent in the crystallization of acetanilide

A: Answer - Acetanilide - Acetanilide is used as an inhibitor of hydrogen peroxide decomposition and is…

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: calculated

A: Part 1: We know that molarity is defined as the number of moles of solute present in per liter of…

Q: What complications would a dried-out column (solvent level is below the top of the silica) introduce…

A: Answer

Q: Describe in words and by means of complete chemical equations, how a mixture of 1.25 g of benzoic…

A: Liquid- liquid extraction: This method is used to separate the mixture of two compounds according to…

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: Explain how a Gravimetric Analysis is performed.

A: Gravimetric analysis is a class of lab techniques used to determine the mass or concentration of a…

Q: Prepare your solution and write a VERY brief description of how you did it. Make sure you mention…

A: Secondary standard solutions is a solution where the concentration of solute dissolved in it has not…

Q: How was the precipitate obtained after filtration? (A By scraping from the filter paper and…

A: Filtration- the process in which solid particles in a liquid are removed by the use of a filter…

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: 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: What are the criteria for a successful determination in gravimetric analysis?

A: Gravimetric analysis is a technique through which the amount of an analyte (the ion being analyzed)…

Q: In which of the following cases would recrystallization be favored over extraction when purifying a…

A: Recrystallisation is a technique that is used for purifying the non-volatile organic compounds.…

Q: Describe in detail the process of purification of a compound via crystallisation by gradual cooling.…

A: Purification of compounds can be achieved by various processes such as crystallization, sublimation,…

Q: Which statement is true?   Statement 1: In paper chromatography, the more soluble substances in…

A: Given statements are : Statement 1: In paper chromatography, the more soluble substances in the…

Q: Suggest various methods to remove temporary and permanent hardness of water with appropriate…

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Q: Beer's law why does the procedure for measuring the concentration of a solution photometrically…

A: For the calibration of spectrophotometer blank solution is needed.

Q: Explain what the liquid-liquid extraction technique consists of

A: Liquid–liquid extraction  also known as solvent extraction and partitioning.

Q: It is tempting to maximize the amount of product isolated by continuing the fractional distillation…

A: The solution is given below -

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: 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: The authenticity of sodium nitrite and the presence of impurities of nitrites and nitrates in…

A: Chemical test for the presence of the nitrate and nitrite ions.

Q: Calculate the percent error in Avogadro's number calculated by using the following experimental…

A: Concentration of stearic acid = 1.2×10-4gram/milliliter.Number of drops to complete monolayer = 23…

Q: Describe the temperature-composition diagram. What did you observe with the temperature of the vapor…

A: Type of chart used to show conditions at which thermodynamically distinct phases occur and coexist…

Q: Which properties would be ideal in selecting the compound to be used as a primary standard for…

A: A primary standard solution of a compound is used for the standardization of a solution of another…

Q: How does the process of preparing an aqueous solution of known concentration from a stock solution…

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: Why is the washing of crystals on the filter paper not as effective a process of purification as…

A: Since there are multiple questions, we will answer only the first one. If you require the answers to…

Q: Why is it necessary to allow enough time for your samples to dry?

A: during the organic synthesis, product may contain the impurity due the presence of the solvent

Q: Why is important to allow the saturated solution to cool down slowly during the recrystallization?

A: Recrystallization is most useful purification technique. It is used for purify solid compounds.

Q: Suggest methods (aside from recrystallization) that can increase the purity of aspirin in the final…

A: The question is based on the concept of qualitative aspects of the experimental chemistry. we have…

Q: Explain the simple distillation process in 10 sentences Enumerate all the apparatus used in the…

A: Simple distillation is the process in which two liquids can be separated out from the solution…

Q: What limitations are encountered in the application of sublimation as a general method of…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Briefly explain the principles involved in the separation of the components of a mixture by solvent…

A: Extraction is a method used for the separation of organic compound from a mixture of compound. This…

Q: What are desirable properties of a gravimetric precipitate?

A: The most favored properties of gravimetric precipitate are as follows,

Q: A mixture contain benzoic acid, salt, powdered silica (white sand) and contaminated with coloring.…

A: Benzoic acid is soluble in organic solvents like ethyl acetate. When the mixture is treated with…

Q: In recrystallization, fluted filter paper is used instead of a regular cone because it minimizes its…

A: In recrystallization, an impure solid compound is mixed with hot solvent to form a saturated…

Q: Why would it be possible to get less than 100% recovery for a recrystallization?

A: The question is based on the concept of recrystallization. recrystallization is a purification…

Q: Contrast the physical appearance of the crude material before the recrystallization and that of the…

A: A question based on re-crystallization, which is to be accomplished.

Q: In order to analyse mercury with AAS, which method will you prefer? Explain this method in detail.

A: Cold Vapor Atomic Absorption Spectroscopy Mercury in waste water can be determined by Flameless…

Q: How the concept of vapor pressures would differ between simple distillation and steam distillation…

A: The solution  of the question is given below:

Q: TRUE or FALSE. Extraction is attained when the solute is completely dissolved and the concentration…

A: In the extraction process we sepate the solute which are soluble in the perticular solvent from the…

Q: Give a fundamental description of the recrystallization process. Explain why it is required and how…

A: Recrystalization is a purification technique not a separation technique.

Q: Briefly describe the principles for separating the components of a mixture by solvent extraction.

A: Extraction is the process of separation of substances from its aqueous solution by shaking with a…

Q: In fractional distillation, the greater the length of a fractionating column: * the lower its…

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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: Why is a calibration curve necessary for experiment of determination of phosphate in water?

A: In analytical chemistry, a calibration curve, also known as a standard curve, is a general method…

Q: cite literature that gravimetric analysis is used to test the purity of squash soup product

A: As demand is increasing for the popular products in the market makers and manufacturers are using…