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Question 3 (4 points) The vapor pressure of a liquid is dependent on: the temperature of...
Which of the following changes would increase the vapor pressure of a liquid? i. An increase in temperature ii. An increase in the intermolecular forces in the liquid iii. An increase in the size of the open vessel containing the liquid a) i and ii only b) i and iii only c) i only d) ii only e) iii only If the rate of evaporation from the surface of a liquid exceeds...
figure 1 Figure 2 Liquid ethanol mm P increasing P = equilibrium vapor pressure P=0 Add System comes to equilibrium ethanol Evacuated flask, pressure zero Molecules begin to vaporize, pressure increases Molecules leave and enter liquid at equal rates, pressure reaches steady-state value 34.6 °C 78.3°C 100 °C Normal boiling point Diethyl ether Vapor pressure (torr) Ethyl alcohol (ethanol) Water Ethylene glycol 100 20 40 60 80 Temperature (°C) Copyright 2009 Pearson Prentice Hall,Inc. Click on: (Figure 2) and study...
When the vapor pressure of a liquid equals atmospheric pressure, the temperature of the liquid equals Group of answer choices the boiling point of the liquid the normal boiling point of the liquid 100° C 273 K
check each statement about the temperature, check each item that is a unit of pressure, which of the following pairs of substances are held together by hudrogen bonds, multiple choice, name the phase 16. Check each true statement about the temperature 0 K. The K stands for kilo. The K stands for Kelvin. This is a temperature that is suitable for biological processes. It is absolute zero. This temperature is the middle of the Kelvin scale. This is the coldest...
Which of the following are TRUE statements regarding evaporation, boiling, and vapor pressure? Select as many as are applicable however points will be deducted for incorrect answers. Select one or more: The standard boiling point occurs when the vapor pressure of a compound equals 1 bar The rate of evaporation at temperatures below the boiling point is dependent on surface area The vapor pressure at dynamic equilibrium in a closer container does not depend on the amount of liquid, as...
18. 0/3 points Previous Answers GVSUChem 115v2 10.a.P.004. Check all that are true about the relationship between temperature and vapor pressure. As the temperature increases, the average energy of the molecules in the liquid, increases. o As the temperature increases, the intermolecular forces between the molecules decreases. As the temperature increases, more molecules can escape into the vapor phase even if the liquid does not boil. As the temperature is increased, the boiling point will increase. As the temperature is...
oter 7 Reading Question 4 Part A Which of the following statements about vapor pressure is true? View Available Hint(s) O Vapor pressure is caused by gas molecules returning to liquid form As temperature increases, vapor pressure decreases. Compounds with stronger attractive forces predict higher vapor pressures at a given temp e Compounds with higher boiling points have lower vapor pressures at a given temperature. Submit
1.Pentane (C5H12) has a surface tension of 1.61 x 10 ^ -2, while ethanol (C2H5OH) has a surface tension of 2.23 x 10 ^ -2, which would have the highest viscosity? A) pentane B) ethanol C) both have the same viscosity D) cannot be determined with the information provided 2.Which of the following is true for surface tension? l is a measure of the surface area exposed by the liquid ll increases with increasing intermolecular attraction forces lll decreases with...
Question 1 & 2. which of the following statements is true? the vapor pressure of a liquid _____ as the strength of its intermolecular forces increases. Question 1 Select one answer Which of the following statements is true? 10 points A. When heat is added to ice at 0 °C the ice begins to melt, but the temperature remains constant until all of the ice becomes liquid water. B. When heat is added to ice at 0°C the ice begins...
There is a compound Z that exists in the liquid phase at room temperature and pressure with a vapor pressure of 0.2 atm. When 250 ml of Z is mixed with 250 ml of water the resulting mixture has a lower vapor pressure than predicted. Explain what this means in terms of the intermolecular forces of the solute(Z) and the solvent ( water). Is Z likely to participate in hydrogen bonding? Why or why not. When pure compound Z (as...