38. Selenium tetrabromide has a vapor pressure of 757 mmHg at 145°C and 422 mmHg at 85°C. What is the heat ofvaporization of selenium tetrabromide?a. 6.45 kJb. 10.1 kJc. 8.58 kJd. 12.1 kJ39. "The temperature at which the vapor pressure of a liquid equals the pressure exerted on the liquid" is called what?d. the critical pointc. the critical pressureb. the boiling pointa. the triple point

Answered: Image /qna-images/answer/2e1cf3d4-115b-4682-9c00-a6d671ac735e.jpg

Answered: 38. Selenium tetrabromide has a vapor…

38. Selenium tetrabromide has a vapor pressure of 757 mmHg at 145°C and 422 mmHg at 85°C. What is the heat of vaporization of selenium tetrabromide? a. 6.45 kJ b. 10.1 kJ c. 8.58 kJ d. 12.1 kJ

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

a. Calculate the heat required to melt 9.00 g of benzene at its normal melting point. Heat of fusion (benzene) = 9.92 kJ/mol Heat = kJ b. Calculate the heat required to vaporize 9.00 g of benzene at its normal boiling point. Heat of vaporization (benzene) = 30.7 kJ/mol Heat = kJ
The pressure above a pure sample of solid Substance X at -180. °C is lowered. At what pressure will the sample sublime? Use the phase diagram of X below to find your answer. pressure (atm) 0.4- 0.2- solid liquid 0. 200 temperature (K) gas 400 Note: your answer must be within 0.025 atm of the exact answer to be graded correct. atm х
What is the vapor pressure of ethanol at 55 degrees C ? The boiling point is 78.4 degress C and the heat of vaporization is 42.3kJ/mole?
A certain substance has a heat of vaporization of 65.99 kJ/mol. At what Kelvin temperature will the vapor pressure be 7.00 times higher than it was at 339 K?
4
Use the phase diagram of Substance X below to find the pressure at which the melting point of X is - 173. °C. 1.6- solid liquid 0.8- gas 100 200 temperature (K) Note: your answer must be within 0.1 atm of the exact answer to be graded correct. atm pressure (atm)
1. Calculate the amount of heat (in kJ) released when converting 150.2 g of water to ice at -23 degrees Celsius. 2. A closed vessel of volume 10.0 L initially contains 1.303 g of water and no water vapor. Please calculate the mass of liquid water remaining once the system reaches equilibrium at 30 degrees Celsius. The vapor pressure of water at that temperature is equal to 0.0418 atm. 3. A person drinks four glasses of cold water (5 degrees C) every day. The volume of each glass is 195. mL. How much heat (in kJ) does the body have to supply to raise the temperature of the water to 37 degrees C (body temperature)? 4.From these data: N2H4(l) + O2(g) à 2N2(g) + 2H2O(l) H= -622.2 kJ/mol H2(g) + ½O2 à H2O(l) H= -285.8 kJ/mol H2(g) + O2(g) à H2O2(l) H= -115 kJ/mol Find H for the reaction: N2H4(l) + 2H2O2(l) à 2N2(g) + 4H2O(l) 5. Consider the following chemical equation. CH4(g) + 2O2(g) à CO2(g) + 2H2O(l) Using the values in the table, calculate…
The figure below is a plot of vapor pressure versus temperature for dichlorodifluoromethane, CCl₂ F2. The heat of vaporization of the liquid is 165 J/g, and the specific heat of the liquid is about 1.0 J/g. K. Vapor pressure (atm) 8 7 6 4 3 2 1 -40-30-20-10 0 10 20 30 Temperature (°C)
Use the observation in the first column to answer the question in the second column. ft C W rosoft icrosoft 52.210... esc observation At 1 atm pressure, Substance C boils at 88. °C and Substance D boils at 65. °C. The enthalpy of vaporization of Substance E is bigger than that of Substance F. At 63 °C, Substance A has a vapor pressure of 84. torr and Substance B has a vapor pressure of 104. torr. Explanation ! 1 280 Which has a higher enthalpy of vaporization? Substance C Substance D Neither, C and D have the same enthalpy of vaporization. It's impossible to know without more information. At any temperature where both substances are liquid, which has the higher vapor pressure? O Substance E Substance F Neither, E and F have the same vapor pressure. It's impossible to know without more information. Which has a higher boiling point? Substance A Substance B Neither, A and B have the same boiling point. It's impossible to know without more information. Q # 3 17 DEC C 10 question $ 4 H % 5…
Direction: Use the heating curve of ethanol to answer the questions below. HEATING CURVE OF ETHANOL E mOILING F 78+ LIQUID B MELTINGC. -115+ SOLID TIME T'E'N'A Questions: 1. What point where ethanol begins to melt? 2. What is ethanol`s melting point? 3. What point where ethanol is all done melting? 4. Between what point where solid and liquid ethanol co-exist? 5. At what point is ethanol is all in its gas phase? 6. Between what point where liquid and gas ethanol co-exist? TEMPERATURE ("C)
A certain substance has a heat of vaporization of 52.85 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.00 times higher than it was at 287 K?