HomeworkLib
Question

A) The vapor pressure of an aqueous solution of potassium bromide at 31 °C is 0.04173...

A) The vapor pressure of an aqueous solution of potassium bromide at 31 °C is 0.04173 atm. The vapor pressure of pure water at the same temperature is 0.04434 atm. Estimate the freezing point of the solution. For water, Kfp = 1.86 °C/m. Answer:_____ °C

B)
Complete combustion of 3.769 g of a compound of carbon, hydrogen, and oxygen yielded 8.120 g CO2 and 3.325 g H2O. When 13.90 g of the compound was dissolved in 253 g of water, the freezing point of the solution was found to be -0.998 °C. For water, Kfp = 1.86 °C/m. What is the molecular formula of the compound?

  • Enter the elements in the order C, H, O
    Answer:
    molecular formula = ______
science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
A) The vapor pressure of an aqueous solution of potassium bromide at 31 °C is 0.04173...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Complete combustion of 3.129 g of a compound of carbon, hydrogen, and oxygen yielded 4.665 g...

    Complete combustion of 3.129 g of a compound of carbon, hydrogen, and oxygen yielded 4.665 g CO2 and 1.433 g H2O. When 15.00 g of the compound was dissolved in 297 g of water, the freezing point of the solution was found to be -0.797 °C. For water, Kfp = 1.86 °C/m. What is the molecular formula of the compound?​

  • Complete combustion of 4.251 g of a compound of carbon, hydrogen, and oxygen yielded 6.337 g...

    Complete combustion of 4.251 g of a compound of carbon, hydrogen, and oxygen yielded 6.337 g CO2 and 1.946 g H2O. When 20.30 g of the compound was dissolved in 348 g of water, the freezing point of the solution was found to be -0.919 °C. For water, Kfp = 1.86 °C/m. What is the molecular formula of the compound? Enter the elements in the order C, H, O molecular formula =

  • Complete combustion of 8.293 g of a compound of carbon, hydrogen, and oxygen yielded 21.45 g...

    Complete combustion of 8.293 g of a compound of carbon, hydrogen, and oxygen yielded 21.45 g CO2 and 4.391 g H2O. When 20.50 g of the compound was dissolved in 269 g of water, the freezing point of the solution was found to be -1.04 °C. For water, Kfp = 1.86 °C/m. What is the molecular formula of the compound? Enter the elements in the order C, H, O

  • ch.13 answer each of these please What is the boiling point of an aqueous solution that...

    ch.13 answer each of these please What is the boiling point of an aqueous solution that has a vapor pressure of 22.5 torr at 25°C? (Puo 23.78 torn; Kb = 0,512 °C/m). Express your answer using four significant figures. VO AXO ? c A solution contains 10.55 g of unknown compound (non-electrolyte) dissolved in 50,0 mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -4,35 °C. The mass percent composition of...

  • 14. What is the vapor pressure in mmHg of a solution of a solution that contains...

    14. What is the vapor pressure in mmHg of a solution of a solution that contains 10.0 g of urea, CHAN20, in 150.0 g of water at 45.0 "C. The vapor pressure of water at 45.0°C is 71.93 mmHg and urea is a nonvolatile solute. 15. What is the freezing point in °C for the above problem? For water, Kr-1.86 °C/m. 16. The van't Hoff factor for KClisi = 1.85. What is the boiling point of a 0.75 m solution...

  • An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at 50 ∘C. The vapor...

    An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at 50 ∘C. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent? A hypothetical solution forms between a solid and a liquid. The values of the thermodynamic quantities involved in the process are shown in the following table. Action Enthalpy separation of solute 11.5 kJ/mol separation of solvent 21.8 kJ/mol formation of solute-solvent interactions -86.7 kJ/mol solute...

  • An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at 50 ∘C. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent? A hypotheti...

    An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at 50 ∘C. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent? A hypothetical solution forms between a solid and a liquid. The values of the thermodynamic quantities involved in the process are shown in the following table. Action Enthalpy separation of solute 11.5 kJ/mol separation of solvent 21.8 kJ/mol formation of solute-solvent interactions -86.7 kJ/mol solute...

  • References Use the References to access important values if needed for this question. The normal freezing...

    References Use the References to access important values if needed for this question. The normal freezing point of water, H,0 is 0.00 °C and its Kfp value is 1.86 °C/m. Assuming complete dissociation of the electrolyte, if 14.42 grams of are dissolved in 183.4 grams of water what is the freezing point of the solution? ammonium bromide (NH, Br, 97.95 g/mol) oc Submit Answer

  • an aqueous solution is 0.4742 molal in calcium chloride. it has a freezing point of -2.345...

    an aqueous solution is 0.4742 molal in calcium chloride. it has a freezing point of -2.345 degrees C. determine the effective number of particles arising from each CaCl2 formula unit in this solution. For water, Kfp=1.86 degrees C/m.

  • 1. 1200 mL aqueous solution of 45 g of ethylene glycol and 80 g of sucrose...

    1. 1200 mL aqueous solution of 45 g of ethylene glycol and 80 g of sucrose were prepared with a density of 1.37 g/mL. Assume that the solution behaves ideally. Notes: The vapor pressures of water and ethylene glycol at 20 °C are 17.54 torr and 0.06 torr, respectively, and Kb and Kf of water are 0.51 K/m and 1.86 K/m, at 25 °C respectively. a. What is the freezing point of this solution? b. What is the vapor pressure,...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT