Hydrophobic colloids are stabilized in water by adsorbed anions. Explain with an example?

Q: The van der Walls attraction between similar colloidal particles in a solvent is always smaller than…

A: Vanderwaals forces are the interactive forces between similar particles and molecules of matter.

Q: A sample of 2.05 g of polystyrene of uniform polymer chainlength was dissolved in enough toluene to…

A: Since the osmotic pressure is given by  Here the polystyrene is non ionisable molecule. Hence i = 1…

Q: Why is aluminum foil punctured in an experiment to determine the partial weight of volatile liquids?

A: In Dumas method for the determination of the molecular weight of a volatile liquid, the Erlenmeyer…

Q: What is a nonvolatile nonelectrolyte? Why is using this type of solute the simplest way to…

A: Solution- Non-volatile means a substance which do not form vapors easily and thus possess a low…

Q: 7. Account for the difference in color of the filtrate of aqueous methylene blue and that of the…

A:

Q: If through a freezing point depression experiment it was determined that the molality of a solution…

A: mass of Covalent Solid = 7.50 gMass of Solvent = 0.100 kgMolality = 0.122 molalMolar mass of…

Q: Measurement of which colligative property is preferred for determination of molar mass of…

A: The colligative properties are those properties of solution which depends upon number of solute…

Q: (a) Which will adsorb more gas, a lump of charcoal or its powder and why? (b) Describe the…

A: Adsorption, in simple terms, refers to the deposition of molecular species onto the surface of a…

Q: Why do colloids exhibit the Tyndall effect but solutions do not?

A: A solution can be defined as the mixture of solute with solvent. Here solute is the substance in…

Q: What is the molality of sodium ions in a solution containing 50.0 g of Na2SO4 [MW = 142] in 250.0 g…

A: Molality (m), or molal concentration, is the amount of a substance dissolved in a certain mass of…

Q: Perchloric acid (HClO4, MW = 100.458) is commercially available as a 72.5% solution with a density…

A: The question is based on the concept of mass percentage.   amount of substance present in hundred…

Q: Why Chalk Soln sink to the bottom of the glass with regards to the topic of colloidal dispersion?

A: Chalk solution sinks to bottom of the glass . It is because chalk is insoluble in water and forms a…

Q: How can the Tyndall effect be used to distinguishbetween a colloid and a solution? Why?

A: The scattering of the light by the particles that are suspended in the medium is called as Tyndall…

Q: Density of Mole fraction of Molarity Molality % by Mass ppm solution solute

A:

Q: The molal freezing point constant for copper is 23 °C/m. If pure copper melts at 1083°C, what will…

A: Brass is made up of 33.1 mass percent Zn and remaining Cu. This means that 33.1 g is Zn and…

Q: Why does it take a long time for a polymer (PVA) to dissolve in water when a similar mass of sugar…

A: A polymer will take long time to dissolve in water but compounds such as sugar (sucrose) or NaCl…

Q: How do colloids differ from solutions with regard to dispersed particle size and homogeneity?

A: When the size of the dispersed particles lie between that of solution and suspensions particles,then…

Q: What is the molality of a 10% w/w NaCl solution?

A: Molality is defined as number of moles of solute divide by mass of solvent in kilograms

Q: Determine the molality of a 5.001 wt % aqueous solution of LICl.

A:

Q: The molality (moles per kg of water) of a 1.000 M solution of silver nitrate (FW 169.9 amu; AgNO3)…

A: The density of solution, d = 1.140 g/mL Molarity of solution, M = 1 M Molar mass of solute, Ms =…

Q: Construct the hypothetical phase diagram for metals A and B between temperatures of 600°C and 1000°C…

A: Solution Phase diagram could be a graphical illustration of the physical states of a substance below…

Q: (i) Differentiate between adsorption and absorption.(ii) Out of MgCl2 and AlCl3 which one is more…

A: Multimolecular colloids Multimolecular colloids are the systems in which the dispersed phase…

Q: A solution containing 41.684 g of LiF (M.M. = 25.939 g/mol) per liter has a density of l1.391 g/mL.…

A: Molarity is defined as the moles of solute per litre of the solution. M=nV..........(1) where M:…

Q: The solubility of an ionic solid is 124.3g/100g of water at room temperature. What is the maximum…

A: Solubility of ionic solid = 124.3 g / (100 g of water) Temperature is constant. Now we need to…

Q: What is the molality of a 24.4% (by mass) aqueous solution of phosphoric acid?

A: Given, % by mass of aqueous solution of phosphoric acid (H3PO4) = 24.4 %   This means that 100 g of…

Q: calculate the molality and the mass percent of the solute in a solution of toluene (C7H8) and…

A: The relation between molality and mole fraction of solute is shown below:

Q: The concentration in molality of HCI in a solution that is prepared by dissolving 5.5 g of HCI in…

A: The concentration of HCl solution can be calculated as

Q: Exposing a 250 mL sample of water at 20.∘C to an atmosphere containing a gaseous solute at 27.59 kPa…

A: The solubility of this gaseous solute will be, 5.18\times 10^{-5}g/mL5.18×10-5 g/mL

Q: Applications of Colloids?

A: Colloids: The non-crystalline and homogeneous substances that consisting of one substance dispersed…

Q: What is meant by coagulation of a colloidal solution? Name any method by which coagulation of…

A: Coagulation is a process of aggregating together the colloidal particles so as to change them into…

Q: The use of Beer’s law to estimate the concentration of protein samples is limited only to dilute…

A:

Q: What is the freezing point of a 1.85 m solution of a nonvolatile nonelectrolyte solute in…

A: Given information: Molality of solution = 1.85 m

Q: Determine the molality of an aqueous solution prepared by dissolving 0.285 moles of LiCl (MW=42.39…

A:

Q: The density of an aqueous solution containing 40.0% sulfuric acid (H2SO4) by mole is 1.681 g/mL. a)…

A: Molality: The number of moles of the solute dissolved in one kilogram of the solution is known as…

Q: Calculate the molality of a solution where 144 grams of C6H1206 were dissolved in 1500 g of water. *…

A: The given parameters are: mass of solute, C6H12O6 = 144 g mass of solvent, water = 1500 g = 1.500…

Q: Cadmium bromide is used in photography and lithography. Calculate the molality of a solution…

A: Given data: The mass of CdBr2 is 45.38 g. The mass of water is 375.0 g=0.375 kg. To calculate:…

Q: A 75.0 grams of MgCl2 is dissolved in 500.0 g of water. Calculate the molality of the solution.…

A:

Q: (d) Why is complete solid solubility likely to occur in substitutional solid solutions but not in…

A: When we talk about substitutional solid solution the solute and solvent possess similar properties…

Q: Would freezing point depression be different for a volatile solute than for a nonvolatile solute?…

A: The freezing point(fp) of a solution is less than the freezing point of the pure solvent.That is a…

Q: What is meant by coagulation of a colloidal solution? Describe any three methods by which…

A: Process of conversion of colloidal solution into suspension is defined as coagulation. Colloidal…

Q: Why is Tyndall effect shown by colloidal solutions?

A: Tyndall effect is the dispersion of particles by light and its often used to differentiate the true…

Q: Calculate the molality of a solution containing 130.6 g of glycine  (NH2CH2COOH)  dissolved in…

A: Molality = Number of moles of solute/Mass of solvent in Kg Number of moles of solute = Mass of…

Q: Calculate the solubility of oxygen in water at the top of Mt. Everest where the atmospheric pressure…

A: 1- First calculate the partial pressure of O2 : We know that,  p( partial pressure) = ( total…