# chemistry

What concentration of aqueous CaCl2 solution freezes at -10.2ºC? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m.

1. 👍 0
2. 👎 0
3. 👁 82
1. delta T = i*Kf*m
You know delta T, i is the van't Hoff factor (3 for CaCl2; i.e., the number of particles), Kf you have, solve for m.

1. 👍 0
2. 👎 0
posted by DrBob222

## Similar Questions

1. ### Chemistry

What concentration of aqueous CaCl2 solution freezes at -10.2ºC? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m. A. 5.48 m B. 11.0 m C. 1.83 m D. 6.12 m E. 2.74 m

asked by Michelle on August 21, 2010
2. ### CHEMISTRY

What concentration of aqueous CaCl2 solution freezes at -10.2ºC?

asked by Anonymous on November 23, 2010
3. ### Chemistry

What is the freezing point of an aqueous 2.65 m calcium chloride (CaCl2) solution? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m.

asked by David on August 21, 2010
4. ### chemistry

you are conducting a freezing-point determination in the laboratory by using an aqueous solution of KNO3. The observed freezing point of the solution is -1.15 C. Using a pure water sample, you recorded the freezing point of the

asked by Anonymous on February 17, 2011
5. ### chemistry

When an aqueous solution is cooled to low temperatures, part of the water freezes as pure ice. What happens to the freezing point of the remaining solution when this occurs? Explain.

asked by Anonymous on January 31, 2009
6. ### AP Chemistry

1. The heat of solution of salta may either be endothermic or exothermic. What factors determine this? 2. As a solution freezes, why does the freezing temperature continue to decrease? 3. When the concentration of very dilute

asked by anonymous on February 4, 2007
7. ### chem

When saccharin is added to pure water, the freezing point of the resulting solution drops to -5.0C, Calculate the freezing point depression of the aqueous saccharin solution. Note: freezing point of pure water is O.0C... Stuck

asked by Lala on January 16, 2013
8. ### Chemistry

Help! I have to get this done tonight and I cannot get this answer right. A solution of water (Kf=1.86 ∘C/m) and glucose freezes at − 3.55 ∘C. What is the molal concentration of glucose in this solution? Assume that the

asked by Emmalee on February 28, 2016
9. ### Chemistry

What is the freezing point of an aqueous 2.25 m potassium nitrate (KNO3) solution? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m.

asked by Cecilia on August 26, 2010
10. ### Chemistry

What is the freezing point of an aqueous 2.25 m potassium nitrate (KNO3) solution? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m.

asked by Cecillia on August 26, 2010

More Similar Questions