Homework Answers
(a) The depression of freezing point of solution is given by the formula:
deltaTf = i * Kf * M
where i is Vanthoff factor which depends on number of ions produced from the solute in solution
Kf is freezing point depression constant of solvent (here water), M is concentration in molality
here, for all solutions, Kf and M are same. So the depression in freezing point depends on i. Among the given solutes, CaCl2 produces maximum number of ions (3) in solution. So, for the solution dpression in freezing point (delTf) is highest and this solution has the lowest freezing point.
(b) CH3OH is volatile and this solution has the greatest vapor pressure.
(c)
The elevation of boiling point of solution is given by the formula:
deltaTb= i * Kb * M
where i is Vanthoff factor which depends on number of ions produced from the solute in solution
Kb is boiling point elevation constant of solvent (here water), M is concentration in molality
here, for all solutions, Kb and M are same. So the elevation of boiling point depends on i. Among the given solutes, CaCl2 produces maximum number of ions (3) in solution and it has the maximum Vanthoff factor among the given solutions. So, for the solution elevation of point (delTb) is highest and this solution has the highest boiling point.
(d) Among the given solutes, KOH is the strogest base and it has the higest pH.
(e)
NaCl solution and AgNO3 solution produce a precipitate when mixed together. The formula of the precipitate is AgCl.
(f) LiMnO4 solution is used to oxidise Cl- and the oxidised product is Cl2
(g) Among the given solution, CH3OH is expected to have least conductivity as it is completely a non-electrolyte.
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0.01M 0.01M 0.01M 0.01M 0.10M 0.10M 0.1OM 0.10M NaCl 2. 3 2...
Explain your answer? there are 0.100 m solutions of the following solutes: KCIO4 b. Ca(ClO4)2 is 3 c. Al(ClO4)3 izu d....
Explain your answer?
there are 0.100 m solutions of the following solutes: KCIO4 b. Ca(ClO4)2 is 3 c. Al(ClO4)3 izu d. Sucrose 21 2 a. NaCl 2 e. Which of solution will have the highest vapor pressure? CX Which solution will have the lowest freezing point? C Which solution will have the lowest boiling point? A T Which solution will have the highest osmotic pressure?
there are 0.100 m solutions of the following solutes: KCIO4 b. Ca(ClO4)2 is 3 c....
2. Identify the following statements as true or false. :: A 5.0% NaCl solution has a...
2. Identify the following statements as true or false. :: A 5.0% NaCl solution has a lower freezing point than a 2.0% NaCl solution. :: A 5.0% sucrose solution has a higher boiling point than pure water. :: A 5.0% sucrose solution has a higher osmotic pressure than a 10% sucrose solution. :: A 10% NaCl solution has a higher boiling point than a 5% NaCl solution. :: A 2.0% NaCl solution has a higher vapor pressure than pure water....
answer 1-4 Which of the following (a-d) is TRUE regarding solid NaCl dissolving in water The...
answer 1-4
Which of the following (a-d) is TRUE regarding solid NaCl dissolving in water The attraction of the water to the ions in NaCl is through dipole-dipole IFs. Water is considered the solute and NaCl the solvent. The partially positive oxygen in water is attracted to the chloride ion. d. The process of separating the sodium ions from the chloride ions is endothermic. All of these statements are true. polar For the following solution, describe the deviation with respect...
3. Dilutions: Saline solution, used in IV bags, is 0.900% (m/v) NaCl. Suppose that, as a...
3. Dilutions: Saline solution, used in IV bags, is 0.900% (m/v) NaCl. Suppose that, as a hospital technician, you are asked to prepare 200. L of this solution for use that afternoon. The stockroom contains a supply of concentrated (35.096 m/v) NaCl solution available for use. Describe in words or pictures how you would prepare this solution, supporting your procedure with a calculation. Available materials include distilled water and a volumetric container of the appropriate size that you need (just...
Which of the following aqueous solutions has the lowest freezing point? The Kf of water is...
Which of the following aqueous solutions has the lowest freezing point? The Kf of water is 1.86 kg.oC/mol. a. 0.8 m CH3OH (methanol) b. 0.4 m NaCl c. 0.3 m MgBr2 d. 0.2 m AlF3 e. 0.25 m Ca(NO3)2 Calculate the freezing point ONLY for the solution you marked as your answer above.
QUESTION 4 If you take a 171 mL of a 1.4 M NaCl solution and dilute...
QUESTION 4
If you take a 171 mL of a 1.4 M NaCl solution and dilute it to
500 mL, what is the molarity of the final solution?
Enter the numerical answer in decimal notation
QUESTION 10
Information - Colligative
Properties
Colligative properties of solutions are those properties which
depend only on the number of dissolved solute particles in solution
not the chemical properties of the solute. For example when a
solute is dissolved in a solvent, vapor pressure
depression...
4. Colligative Properties: Consider the following solutions: 1) pure water, and 2) a 0.100 M solution...
4. Colligative Properties: Consider the following solutions: 1) pure water, and 2) a 0.100 M solution of NaCl. Answer the following questions by circling the correct answer, and then explaining your choice (with words or pictures). 0.100 M NaCl soln pure water [A] Which has the lower freezing point? 0.100 M NaCl soln [B] Which has the lower boiling point? pure water (C) Which has the higher vapour pressure? pure water 0.100 M NaCl soln 5. Osmosis: Draw a picture...
8. Which aqueous solution will have the lowest freezing point? A) 0.60 molal sucrose B) 0.50...
8. Which aqueous solution will have the lowest freezing point? A) 0.60 molal sucrose B) 0.50 molal KF C) 0.60 molal glucose D) 0.24 molal Fel3 9, If "A" contains 2% NaCl and is separated by a semipermeable membrane occur? A) NaCI will flow from "A" to "B". B) NaCI will flow from "B" to "A". C) Water will flow from "A" to "B". D) Water will flow from "B" to "A". E) none of the above from "B which...
Questions 22-24 refer to the following information. A group of students was asked to recover Cu(s)...
Questions 22-24 refer to the following information. A group of students was asked to recover Cu(s) from a blue-green aqueous solution containing an unknown concentration of Cu (aą). The students took a 100.0 ml sample of the solution and added an excess of 1.0 M Na PO(aq), causing the Cu?(aą) to precipitate as Cu,(PO,)(s), as shown in step I below Step l Blue-green Cu (aq) Colorless Blue-green Cu3(PO)2(5) 10 M Na PO (a 3 Cu(ag) 2 Na,PO, (ag)Cu(P0))+ 6 Na...
Table 1 Factors Affecting Solubility le 1. Identity general trends. Exceptions do sometimes occur, we will leam a...
Table 1 Factors Affecting Solubility le 1. Identity general trends. Exceptions do sometimes occur, we will leam about exceptions and the reasons behind them later. Condition Nonbonding Interaction (if applicable) Dipol-dipole polar solute/polar solvent Effect on Solubility The solute dissolves. nonpolar solute/nonpolar solvent polar soluto/nonpolar solvent nonpolar solute/polar solvent increasing the pressure of a gas over a liquid solvent increasing the temperature of a dissolving solid increasing the temperature of a dissolving gas Table 2 Measures of Solution Concentration Quantity...
Explain your answer?
there are 0.100 m solutions of the following solutes: KCIO4 b. Ca(ClO4)2 is 3 c. Al(ClO4)3 izu d. Sucrose 21 2 a. NaCl 2 e. Which of solution will have the highest vapor pressure? CX Which solution will have the lowest freezing point? C Which solution will have the lowest boiling point? A T Which solution will have the highest osmotic pressure?
there are 0.100 m solutions of the following solutes: KCIO4 b. Ca(ClO4)2 is 3 c....
2. Identify the following statements as true or false. :: A 5.0% NaCl solution has a lower freezing point than a 2.0% NaCl solution. :: A 5.0% sucrose solution has a higher boiling point than pure water. :: A 5.0% sucrose solution has a higher osmotic pressure than a 10% sucrose solution. :: A 10% NaCl solution has a higher boiling point than a 5% NaCl solution. :: A 2.0% NaCl solution has a higher vapor pressure than pure water....
answer 1-4
Which of the following (a-d) is TRUE regarding solid NaCl dissolving in water The attraction of the water to the ions in NaCl is through dipole-dipole IFs. Water is considered the solute and NaCl the solvent. The partially positive oxygen in water is attracted to the chloride ion. d. The process of separating the sodium ions from the chloride ions is endothermic. All of these statements are true. polar For the following solution, describe the deviation with respect...
3. Dilutions: Saline solution, used in IV bags, is 0.900% (m/v) NaCl. Suppose that, as a hospital technician, you are asked to prepare 200. L of this solution for use that afternoon. The stockroom contains a supply of concentrated (35.096 m/v) NaCl solution available for use. Describe in words or pictures how you would prepare this solution, supporting your procedure with a calculation. Available materials include distilled water and a volumetric container of the appropriate size that you need (just...
QUESTION 4
If you take a 171 mL of a 1.4 M NaCl solution and dilute it to
500 mL, what is the molarity of the final solution?
Enter the numerical answer in decimal notation
QUESTION 10
Information - Colligative
Properties
Colligative properties of solutions are those properties which
depend only on the number of dissolved solute particles in solution
not the chemical properties of the solute. For example when a
solute is dissolved in a solvent, vapor pressure
depression...
4. Colligative Properties: Consider the following solutions: 1) pure water, and 2) a 0.100 M solution of NaCl. Answer the following questions by circling the correct answer, and then explaining your choice (with words or pictures). 0.100 M NaCl soln pure water [A] Which has the lower freezing point? 0.100 M NaCl soln [B] Which has the lower boiling point? pure water (C) Which has the higher vapour pressure? pure water 0.100 M NaCl soln 5. Osmosis: Draw a picture...
8. Which aqueous solution will have the lowest freezing point? A) 0.60 molal sucrose B) 0.50 molal KF C) 0.60 molal glucose D) 0.24 molal Fel3 9, If "A" contains 2% NaCl and is separated by a semipermeable membrane occur? A) NaCI will flow from "A" to "B". B) NaCI will flow from "B" to "A". C) Water will flow from "A" to "B". D) Water will flow from "B" to "A". E) none of the above from "B which...
Questions 22-24 refer to the following information. A group of students was asked to recover Cu(s) from a blue-green aqueous solution containing an unknown concentration of Cu (aą). The students took a 100.0 ml sample of the solution and added an excess of 1.0 M Na PO(aq), causing the Cu?(aą) to precipitate as Cu,(PO,)(s), as shown in step I below Step l Blue-green Cu (aq) Colorless Blue-green Cu3(PO)2(5) 10 M Na PO (a 3 Cu(ag) 2 Na,PO, (ag)Cu(P0))+ 6 Na...
Table 1 Factors Affecting Solubility le 1. Identity general trends. Exceptions do sometimes occur, we will leam about exceptions and the reasons behind them later. Condition Nonbonding Interaction (if applicable) Dipol-dipole polar solute/polar solvent Effect on Solubility The solute dissolves. nonpolar solute/nonpolar solvent polar soluto/nonpolar solvent nonpolar solute/polar solvent increasing the pressure of a gas over a liquid solvent increasing the temperature of a dissolving solid increasing the temperature of a dissolving gas Table 2 Measures of Solution Concentration Quantity...
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