a. Colloidal particles typically have a negative surface charge that attracts oppositely charged positive ions in the surrounding bulk solution. These so-called _______-ions are held at the particle surface through electrostatic and van der Waals forces of attraction strongly enough to overcome thermal agitation. b. Turbine and propeller type mechanical mixers used for rapid mixing of reagent chemicals have either ------------- flow impellers with flat or curved blades located parallel to the axis of the drive shaft, or --------------------- flow impellers with blades making an angle of less than 90o wit

a. Colloidal particles typically have a negative surface charge that attracts oppositely charged positive ions in the surrounding bulk solution. These so-called _______-ions are held at the particle surface through electrostatic and van der Waals forces of attraction strongly enough to overcome thermal agitation. b. Turbine and propeller type mechanical mixers used for rapid mixing of reagent chemicals have either ------------- flow impellers with flat or curved blades located parallel to the axis of the drive shaft, or --------------------- flow impellers with blades making an angle of less than 90o wit

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter16: Solutions

Section: Chapter Questions

Problem 16.3TC

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An ideal recrystallization solvent should have a large gradient of solubility along with temperature, has the ability to dissolves the impurities very well and must not chemically react with the product. For each of the three reasons given, give an explanation for why they are a reason that make an ideal recrystallization solvent?
Are Particles Visible? Can it be Filtered? Do Partices Settie? See Tyndal Effect? Example Mixture Solution No saltwater Colloid No Suspension Yes Part 3 Separating Mixtures 15. Since the parts of a moture are combined, they can be separated rather easily. 16. F in the table below to sutmarize the 6 different separation techniques described. Technique Description Separates larger solids from smaller solids by passing them through mesh. Separates magnetic from non-magnetic materials Separates an insolluble solid from a liquid by passing it through a filter. Separates a soluble sold from a liquid by boling off the liquid. Separates a liquid from a soluble solid in solution by boiling and cooling it. Separates mitures of liquids with different boiling points using a condenser. Separates matures of liquids with afferent solubilities using absorbent paper. Part 4 Properties.of Matter 17. Matter can be described by 2 types of properties: and properties 18. A) s a property of matter one can…
polnit: 374 C, 218 atm. B. Liquid is more dense variation. C. Triple point - 56.4 C, 5.11 atm. D. Freezing point depression. 7. Describe the INCORRECT colligative properties observed when non-volatile solute is added to the solvent. A. Catalytic converter. B. Boiling point elevation. C. Vapour pressure lowering. D. Freezing point depression. 8. Select the CORRECT definition of eutectic mixture. A. Liquid that has higher boiling point and remains as liquid after the distillation. B. mixture of two or more phases at a composition that has the lowest melting point. 50 bp
To 500 g of K2Cr207 solution with a mass fraction K2Cr20, 5% added 300g of water. Determine the mass fraction of K2Cr207 in the resulting solution а. 32,5 % b. 10.91 % с. 8.76 % d. 1.107 % е. 3.125 %
The experimental data in the table was collected during a freezing point depression study where BHT (butylated hydroxytoluene) was the solvent. Mass Mass of BHT of unknown 8.526 g 1.316 g Use this data to calculate the molar mass of the unknown solute. molar mass= 16962 Incorrect psy HW 3.pdf Freezing point of pure BHT 74.60 °C APA Title Page -....doc Freezing point of BHT and unknown solution 71.69 °C PSY Final Project....pdf A K₁ for BHT 6.83 °C/m g/mol SH
gage D Cisco Webex 9 Chemistry homewo... T Berry Cheesecake P. A Macmillan Launchp... SA Antiscience Beliefs J... O case studies 4brightspace P statlab -19, 25 [References] Use the References to access important values if needed for this question. What is the solubility of argon (in units of grams per-liter) in water at 25 °C, when the Ar gas over the solution has a partial pressure of 0.546 atm? ky for Ar at 25 °C is 1.40x10-3 mol/L-atm. g/L Submit Answer Try Another Version 1 item attempt remaining Not Visited earch 1O a hp 立
synthetic ion exchange resins. These resins are organic polymeric networks that contain functional groups that are permanently attached to the resin. One such functional group is sulfonic acid, -SO3H. When placed in water, the resin (being a large organic molecule) will not dissolve. However, the ionic functional groups become hydrated and the resin will swell as it takes up waters of hydration. The resin may then be thought of as a solid solution mixture with the functional groups being "dissolved" but the polymer remaining as a solid. The hydronium ion (H3O+) associated with acidic functional groups like sulfonic acid will dissociate just as it would if the acid were free of the resin. If other cations such as Cu2+ or Na+ are added to the resin, an ion-exchange reaction can occur: . Note that one H+ is released for each positive charge bound to the resin. Since the resin exchanges a hydrogen ion for a sodium ion in this reaction, sulfonic acid resins are called cation-exchange…
A. Critical point: 374 C, 218 atm. B. Liquid is more dense variation. C. Triple point: - 56.4 C, 5.11 atm. D. Freezing point depression. 7. Describe the INCORRECT colligative properties observed when non-volatile solute is added to the solvent. A. Catalytic converter. B. Boiling point elevation. C. Vapour pressure lowering. D. Freezing point depression. 8. Select the CORRECT definition of eutectic mixture. A. Liquid that has higher boiling point and remains as liquid after the distillation. B. A mixture of two or more phases at a composition that has the lowest meltin point. C. Free energy change for the formation of 1 mole of the substance from it elements in their standard states. D Mixture of two miscible liguids that has a constant boiling point and the vapou Os the liguid
An ideal property of a solvent to be suitable for recrystallization of a solid sample is: Group of answer choices To have a high boiling point. To dissolve the solid at room temperature but not in cold temperature. To react with the solid to be recrystallized. To dissolve the solid at the solvent's boiling temperature but not at room or cold temperature.
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What is the kinetic property observed in suspension? What is the optical property observed in solutions?
TRUE or FALSE. Extraction is attained when the solute is completely dissolved and the concentration of the solution so formed is uniform. The concentration of the liquid retained by the solid leaving any stage is the same as that of the liquid overflow from the same stage.