Sodium chloride (NaCl) is commonly used to melt ice on roads during the winter. Calcium chloride...
Sodium chloride (NaCl) is commonly used to melt ice on roads during the winter. Calcium chloride (CaCl2) is sometimes used for this purpose too. Let us compare the effectiveness of equal masses of these two compounds in lowering the freezing point of water by calculating the freezing point depression of solutions containing 230. g of each salt in 1.00 kg of water. (An advantage of CaCl2 is that it acts more quickly because it is hygroscopic, that is, it absorbs moisture from the air to create a solution and begin the process. A disadvantage is that this compound is more costly.) Assume full dissociation of ionic compounds. Kfp(H2O)= -1.86 c/m
Delta Tfp= C NaCl
Delta Tfp= C CaCl2
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Sodium chloride (NaCl) is commonly used to melt ice on roads
during the winter. Calcium chloride...
Both NaCl and CaCl2 are used to melt ice on roads and sidewalks in the winter....
Both NaCl and CaCl2 are used to melt ice on roads and sidewalks in the winter. What advantages do these substances have over sucrose and urea in lowering the freezing point of water?
Sodium chloride is commonly used to salt roads. Compare the two salts, CaCl2 and NaCl: Which...
Sodium chloride is commonly used to salt roads. Compare the two salts, CaCl2 and NaCl: Which one is more effective in deicing roads per gram of salt? Back up your answer with calculations.
in cold climates, salt is added to the roads to melt the ice and snow as...
in cold climates, salt is added to the roads to melt the ice and snow as a safety measure. A saturated solution of NaCl in water has a mass of 260.0 g NaCl per 1.20kg of water. Determine the temperature at which the mixture will freeze (water molar freezing point constant =1.86 C/m) Show all the steps
Lab 3: Determination of Molar Mass by Freezing Point Depression 1 During winter, several different "salts"...
Lab 3: Determination of Molar Mass by Freezing Point Depression 1 During winter, several different "salts" are used to melt ice sodium chloride (NaCI), a mix of sodium chloride and magnesium chloride (NaCl and MgCla calcium magnesium acetate (CaMg(CHO)). Assume you have 1 mole of each of these in 1 kg of water. Compare the freezing point depressions of these three "salts." a. b. What is the ratio of moles of "salt" to freezing point depression for each? What is...
Consider 1.00 mole of each of the following substances: 1) NaCl (sodium chloride) 2) CaCl2 (calcium...
Consider 1.00 mole of each of the following substances: 1) NaCl (sodium chloride) 2) CaCl2 (calcium chloride) 3) CH3OH (methanol) 4) Naphthalene (C10H8) Answer the following questions: A) Which one of the above substances would likely not change the freezing point of water at all? Explain. B) Which one of the above substances would likely lower the freezing point of water the most? Explain.
*Please explain answers* Sodium chloride (MW 58.5) is often used in road and sidewalk treatment during the winter to pr...
*Please explain answers*
Sodium chloride (MW 58.5) is often used in road and sidewalk treatment during the winter to prevent ice formation. How many grams of sodium chloride should be added to 0.5 kg of water to lower the freezing point by 3°C? The cryoscopic constant of water is 1.860 deg-kg/mole. Calculate the molality of a of 20% solution of a nonelectrolyte (MW = 300). Assume the density of the solution is 1.0. Please provide the value ofi (van't hoff...
Conductivity of Solutions For Che 2A at RCC Introduction Electrolytes are compounds which conduct electricity when...
Conductivity of Solutions For Che 2A at RCC Introduction Electrolytes are compounds which conduct electricity when dissolved in water. Strong electrolytes consist of ionic compounds which dissociate completely when dissolved in water, AND molecular compounds which completely ionize when dissolved in water. The reactions below illustrate the dissociation reaction of strong electrolytes: Na (aq) + Cl(aq) но NaCl(s) H30 CaBra(s) HO HCl(e) Ca(aq) + 2Br (aa) H*(aq) + C'(aq) Conductivity is a measure of the ability of water to pass...
Lab 3: Determination of Molar Mass by Freezing Point Depression 1 During winter, several different "salts" are used to melt ice sodium chloride (NaCI), a mix of sodium chloride and magnesium chloride (NaCl and MgCla calcium magnesium acetate (CaMg(CHO)). Assume you have 1 mole of each of these in 1 kg of water. Compare the freezing point depressions of these three "salts." a. b. What is the ratio of moles of "salt" to freezing point depression for each? What is...
*Please explain answers*
Sodium chloride (MW 58.5) is often used in road and sidewalk treatment during the winter to prevent ice formation. How many grams of sodium chloride should be added to 0.5 kg of water to lower the freezing point by 3°C? The cryoscopic constant of water is 1.860 deg-kg/mole. Calculate the molality of a of 20% solution of a nonelectrolyte (MW = 300). Assume the density of the solution is 1.0. Please provide the value ofi (van't hoff...
Conductivity of Solutions For Che 2A at RCC Introduction Electrolytes are compounds which conduct electricity when dissolved in water. Strong electrolytes consist of ionic compounds which dissociate completely when dissolved in water, AND molecular compounds which completely ionize when dissolved in water. The reactions below illustrate the dissociation reaction of strong electrolytes: Na (aq) + Cl(aq) но NaCl(s) H30 CaBra(s) HO HCl(e) Ca(aq) + 2Br (aa) H*(aq) + C'(aq) Conductivity is a measure of the ability of water to pass...
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