Question 2 (1 point) Substance A has a higher normal boiling point than substance B. Therefore,...
A substance has a normal boiling point of 125.5 oC and a vapor pressure of 35.5 torr at 20.0 oC. Based on this data, calculate the heat of vaporization (in kJ/mol) for this substance. this the second time I am posting this question, the first answer was wrong. Please help me with the correct answer.
Question 14 1 pts Why is the boiling point of an aqueous solution higher than the boiling point of pure water? Because the temperature increases Because the liquid/gas equilibrium slope is positive on the phase diagram Because the total pressure decreases due to the solute o Because the vapor pressure decreases due to the solute None of the options explain why the boiling point increases
Ethyl alcohol has a boiling point of 78.0 degrees Celsius, a freezing point of -114 degrees Celsius, a latent heat of vaporization of 879 kJ/K, a latent heat of fusion of 109 kJ/K, and a specific heat of 2.43 kJ/kg.K. How much energy must be removed from 0.510 kg of ethyl alcohol that is initially a gas at 78.0 degrees Celsius so that it becomes a solid at -114 degrees Celsius?
Answer is B 31. A substance has a density of 1,800 kg/m in the liquid state. At atmospheric pressure, the substance has a boiling point of 170 °C. The vapor has a density of 6 kg/m at the boiling point at atmospheric pressure. What is the change in the internal energy of 1 kg of the substance, as it vaporizes at atmospheric pressure? (Use heat of vaporization L,-1.7 × 105 J/kg) D. 12 kJ A. 180 kJ B. 170 kJ...
A certain substance has a heat of vaporization of 44.44 kJ/mol. At what Kelvin temperature will the vapor pressure be 4.50times higher than it was at 345 K?
A certain substance has a heat of vaporization of 46.78 kJ/mol. At what Kelvin temperature will the vapor pressure be 4.50 times higher than it was at 319 K? T= K
A certain substance has a heat of vaporization of 47.27 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.00 times higher than it was at 329 K?
A certain substance has a heat of vaporization of 34.76 kJ/mol. At what Kelvin temperature will the vapor pressure be 6.00 times higher than it was at 341 K?
A certain substance has a heat of vaporization of 29.63 kJ/mol. At what Kelvin temperature will the vapor pressure be 5.50 times higher than it was at 365 K?
A certain substance has a heat of vaporization of 31.86 kJ/mol. At what Kelvin temperature will the vapor pressure be 7.50 times higher than it was at 323 K?