Which of the following sentence is incorrect: Occlusion is a type of coprecipitation in which a compound is trapped w a pocket formed during crystal growth Digestion is a process in which a precipitate is heated in the presence of solution to improve the purity and filterability O Reprecipitation can be used to remove coprecipitated impurities O In peptization, a coagulated colloid returns to its original dispersed state O Coprecipitation doesn't cause either positive or negative errors

Which of the following sentence is incorrect: Occlusion is a type of coprecipitation in which a compound is trapped w a pocket formed during crystal growth Digestion is a process in which a precipitate is heated in the presence of solution to improve the purity and filterability O Reprecipitation can be used to remove coprecipitated impurities O In peptization, a coagulated colloid returns to its original dispersed state O Coprecipitation doesn't cause either positive or negative errors

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter12: Gravimetric Methods Of Analysis

Section: Chapter Questions

Problem 12.1QAP

See similar textbooks

Similar questions

A water solution of sodium hypochlorite (NaOCl) is used as laundry bleach. The concentration of sodium hypochlorite is 0.75 m. Express this concentration as a mole fraction.
A gaseous solute dissolves in water. The solution process has H=15 kJ. Its solubility at 22C and 6.00 atm is 0.0300 M. Would you expect the solubility to be greater or less at (a) 22C and 1 atm? (a) 18C and 6 atm? (a) 15C and 10 atm? (a) 35C and 3 atm?
The Henry's law constant for the solubility of radon in water at is 9.57106 M/mm Hg. Radon is present with other gases in a sample taken from an aquifer at 30C. Radon has a mole fraction of 2.7106 in the gaseous mixture. The gaseous mixture is shaken with water at a total pressure of 28 atm. Calculate the concentration of radon in the water. Express your answers using the following concentration units. (a) molarity (b) ppm (Assume that the water sample has a density of 1.00 g/mL.)
How do colloids differ from solutions with regard to dispersed particle size and homogeneity?
A technician dissolves 12.00g of a nonvolatile solid into 100.0g of methyl ethyl ketone MEK. The vapor pressure of pure MEK is 99.40mmHg, while the vapor pressure of the solution is 97.23mmHg. What is the molar mass of the solid?
A solution is made by dissolving 34.0 g of NaCl in 100 g of H2O at 0C. Based on the data in Table 8-1, should this solution be characterized as a. saturated or unsaturated b. dilute or concentrated
Compounds like sodium stearate, called “surfactants” ingeneral, can form structures known as micelles in water,once the solution concentration reaches the value knownas the critical micelle concentration (cmc). Micelles containdozens to hundreds of molecules. The cmc dependson the substance, the solvent, and the temperature. At and above the cmc, the properties of the solution varydrastically. (a) The turbidity (the amount of light scattering) of solutionsincreases dramatically at the cmc. Suggest an explanation.(b) The ionic conductivity of the solutiondramatically changes at the cmc. Suggest an explanation.(c) Chemists have developed fluorescent dyes that glowbrightly only when the dye molecules are in a hydrophobicenvironment. Predict how the intensity of such fluorescencewould relate to the concentration of sodium stearateas the sodium stearate concentration approaches and thenincreases past the cmc.