What are the purposes of the following in recrystallization of solids?  I) boiling stones – II) activated carbon -   III) seed crystals

Q: Why would industry prefer to purify solids by sublimation or zone refining rather than…

A: The advantage of sublimation for purification process are i) Minimum amount of product is lost. ii)…

Q: What is the function of a desiccant in a set-up of volatilization gravimetry?   To remove nitrogen…

A: Volatilization gravimetry is a technique used to separate the components of the mixture by heating…

Q: Explain how vacancies are introduced in a solid NaCl crystal when a compound containing cation of…

A: How vacancies are introduced in a solid NaCl crystal when a compound containing cation of higher…

Q: 17. This scenario mimics a situation a 2022 graduate experienced on their APPE last spring: How many…

A: Here to calculate the ml of anhydrous dextrose 10%(w/v) solution and anhydrous dextrose 2.5% (w/v)…

Q: Consider why CaCl2 or MgCl2 are used as de-icers rather than NaCl is no longer used as a deicer.

A: De-icers or de-icing agents are substances that removes snow, ice from roads or any other surface.…

Q: Ethanol is miscible with water. Assuming that caffeine is soluble in ethanol, could you use ethanol…

A: Let us assume that caffeine is soluble in ethanol

Q: a.) vapor phase composition S 92 F

A:

Q: recrystallization, a pure substance

A: A network of crystals having similar structure and size appeared during the recrystallization.

Q: If acetone is miscible with both water and xylene, then why can’t all three form a clear single…

A: "Like dissolves Like" which means polar solute dissolves in polar solvents and non- polar solute…

Q: 2furoic adid isa white solid that follows this usual pattern as, 1 gram of 24uroic acid disolves in…

A: The experiment is based on the recrystallization of 2-furoic acid.

Q: identify percipitate include the phases  Ba(NO3)2+Na2SO4→BaSO4+2NaNO3

A: A precipitate is said to be formed when two solutions containing soluble salts are mixed and the…

Q: Does the commonly reported solubility of an inorganic compound in water pertain to large crystals or…

A: Solubility of any substance depends upon the physical and chemical properties of the solute and the…

Q: The solubility of Ni3(PO4)2 in water at a particular temperature is 8.0 × 10-4 M. What is Ksp for…

A: Solubility means the maximum amount of solute that can be dissolved in given solvent. Factor…

Q: Which of the following is false about the dissolution of ammonium nitrate? NH4NO3(s) ⇌ NH4+(aq) +…

A: We can eliminate the options to get the right answer so the first 3 options are right .

Q: Question attached

A: Given: During the recrystallization process, the solution has come to the room temperature and no…

Q: When two metals are completely insoluble in each other in the solid ate is called binary eutectic…

A: A binary eutectic system consists of homogeneous mixtures of two substances that melts or solidifies…

Q: e This diagram shows the apparatus used for distillation. What is the function of part X?

A: Distillation is one of the oldest and still most common methods for both the purification and the…

Q: After water and benzene are mixed, we see two layers. A True False

A: After water and benzene are mixed, we see two layers.   This is a True statement.

Q: 3. Which of these elements would you expect to form the following with copper: Electro- Atomic…

A: a) Copper will form a solid solution with complete solubility Ni due to its very similar size, equal…

Q: Determine the exact hardness in units of mg/L as CaCO3. Ba2+ contributes to hardness as well.

A: Given that,

Q: What is a marine calcifier and what are the effects of acidification on marine calcifiers?

A: Marine calcier : Biodiversity in ocean eco-system, is quite large. Starting from a very small…

Q: ▪ What are two methods of extraction - A)liquid-liquid, Solid Phase Extraction B)solid-solid, Gas…

A: There are many methods of extraction which are used in extraction process like solid -phase…

Q: 1. What is the effect of varying the amount of solvent on the electrical conductivity of solution?…

A: 1. The more concentrated a solution is, the higher the conductivity is. In most cases it is a…

Q: Match the following. Choices: Adsorbent, Absorbent, Impurity, Crystallization, Deposition,…

A:

Q: In Purification by Sublimation, what improvement can suggest to increase the amount of crystals that…

A: Sublimation refers to when a substance in a solid-state and changes into vapours without going into…

Q: State the purpose of impregnating the filter paper with colloidion solution.

A: The pore size of ordinary filter paper is higher than that of colloidal particle. Hence the ordinary…

Q: What volume of water at 20.0 °C (d = 0.9982 g cm-3) is needed to dissolve 47.1 g of sucrose to make…

A:

Q: Each winter the street departments put salt on the roads. Usually, they use NaCl as salt.  However,…

A: The addition of salt to the ice-water lowers the freezing point below the temperature of the ice.…

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

A: The limitations are encountered in the application of sublimation as a general method of…

Q: Which dissolution process would be most exothermic? A. KCI in H20 B. CH3CH2OH in CH3OH C. C2H6 in…

A: Generally, there are three steps in each dissolution process. 1. Breaking up of bonding of solute…

Q: The concentration of hydrochloric acid in a solution that is prepared by dissolving 5.5 grams of…

A: Given : Mass of HCl = 5.5 g Mass of ethanol (solvent)  =200 g or 0.200 kg To calculate= molal…

Q: In fermentation distillation experiment, why does the boiling point increase, and the % ethanol…

A: A question based on physical chemistry, which is to be accomplished.

Q: 1. Which IMF or IMFs are correlated with molar mass? Describe this correlation

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

Q: what is the difference between a sulfer atom and a sulfer molecule?

A: The sulfur atom is an oxygen group element of atomic number 16. It consists of six valence electrons…

Q: When performing a recrystallization of an impure solid, why is it important to allow the heated…

A: Recrystallization is thy method of separation of impure compound or purify compound by adding…

Q: Describe the preparation of a 45.0 mL of 0.500 M solution of potassium permanganate solution,…

A:

Q: 1. What is the effect of the nature of solvent on the electrical conductivity of solutions? 2. What…

A: 1) Nature of solvent affect the conductivity of solution:     Nature of the solvent:  many types of…

Q: Describe the preparation of a 45.0 ml of 0.500 M solution of potassium permanganate solution,…

A:

Q: what chemical equation produce when 5 mL of concentrated hydrochloric acid and 3 drops of 2%…

A: Normally Vanaspati is prepared from vegetable or seed oil by the hydrogenation process. It is…

Q: Calculate final MgCl2 concentration in mM for tube 2 and 3.

A: In each of the tube, the original MgCl2 solution is diluted by adding the substrate and Tris-HCl…

Q: Give an example of Calcination?

A: The process of converting an ore into oxide by heating it strongly below its melting point in a…

Q: It is preferable to use the conical beaker for the crystallization process

A: Beakers (cylindrical) have a very wide surface area, which allows hot liquids to evaporate more…

Q: What is true about the miscibility of water and cyclohexane?

A: Miscibility is the property of two or more liquids to mix in all proportions so as to make…

Q: why crystallization is  considered as a  First-order  Phase transition?

A: Analysing change during crystallization process.