This is because the strong attractive forces between the ions and water molecules can overcome the ionic bonds in CrCl3 and the hydrogen bonds between water molecules, allowing the ions to become solvated and the compound to dissolve.ģ. In order for chromium chloride to dissolve in water, the attractive forces between water molecules and chromium and chloride ions must be stronger than the combined ionic bond strength of CrCl3 and the intermolecular forces between water molecules. chloride is capable of absorbing up to 3 water. This indicates that the heat of solution is endothermic because the system is absorbing heat from the surroundings, causing the temperature to decrease.Ģ. The Heat Capacities ofChromium, Chromic Oxide, Chromous Chloride and. When chromium chloride (CrCl3) is dissolved in water, the temperature of the water decreases. Pre-Lab Questions When chromium chloride, CCl dissolved in walet the tcmperalure of Ihe watcr dccreuSc $ Is the heat of solution exotheric endothermic?ġ. With the presence of some chromium(II), however, solid CrCl 3 dissolves rapidly in water. First determinc the hcat released per gram of solid. This chromium(II) compound undergoes substitution easily, and it can exchange electrons with CrCl 3 via a chloride bridge, allowing all of the CrCl 3 to react quickly. Al,(SO Oy' Calculate the molar heat of solution AHgola" for alumninum sulfate, Hint: The units for molar beat of solution are kilojoules per mole (kJhmole). In Question above, the calorimeler was Touid have heat capacity of 8.20 JCC: If comechon Included accouni for the heat absorbed by the calorimeler what is the heat of solution, 9ola? The solid in Question aluminum sulfate. Calculale the heat released the solid dissolved, Goln' assuming heat loss the calorimeter (sec Equation [) solution WIS formed by combining 25.0 g of solid / with 60.0 Unk of distilled water with the water initially at 21.4 ' The final temperature of the solution was 25.3 'C. Which stonecr the atuactive forces between waler Moleculs 4nCL chromium and chloride ions, the combined ionic bond strength of CCl and intermolecular forces betwcen watcr molecules? Explain. SOLVED: Pre-Lab Questions When chromium chloride, CCl dissolved in walet the tcmperalure of Ihe watcr dccreuSc Is the heat of solution exotheric endothermic?
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