12.39 Which member in each pair of liquids has the lower vapor pressure at a given temperature? Explain. (a) HOCH,CH,OH or CH,CH,CH,OH (b) CH,COOH or (CH;),C=0 (c) HF or HCI

Q: Ethanol, with AHvan = 40.5 kJ mol1, has a higher AHvap than methanol, which is 35.2 kJ mol1, due to…

A: Given data,∆Hvap for ethanol=40.5kJ/molInitial pressure (P1)=0.0992atmInitial…

Q: A “canned heat” product used to warm buffet dishes consists of a homogeneous mixture of ethanol…

A: Given: The mass of paraffin is 620 kg. The vapor pressure of ethanol in solution is 8 torr. The…

Q: The freezing point of the following mixture is 1. and the boiling point for the following mixture is…

A: This question belongs to colligative property.

Q: a. What mass of ethylene glycol (C2H6O2) must be added to 221.0g of water to obtain a solution with…

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Q: 1) In the following reaction 27.1 mL of O2 (2) is collected over water at 23 °C and barometric…

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Q: Which pairs of liquids are likely to be miscible? (a) H,O and CH,OH (c) C̟H4 and CCl, (b) H,O and…

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Q: 1. What is the use of dry ice? Dry ice, CO2 (solid), does not melt at atmospheric pressure. It…

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Q: Which would you expect to have the higher boiling point, the hydrocarbon fuel butane, C4H10, or the…

A: Boiling point of any liquid depends upon the strength of inter-molecular force of attraction…

Q: A ubstance with AH°vap = 50.0 kJ/mol has vepor pressure of 0.100 atm at temperature 90 C. Calculate…

A: The enthalpy of vaporization is the amount of heat energy needed to convert a solid to a gas. The…

Q: A 11.92 A solution prepared by dissolving 5.00 g of aspirin, C9HgO4, in 215 g of chloroform has a…

A:

Q: Which of the following compounds would cause thegreater boiling point elevation, per mol, in H2O:…

A: To determine which of the following compound would cause the greater boiling point elevation per mol…

Q: A. Arrange the following according to increasing boiling point, freezing point, and vapor pressure:…

A: Since relative lowering in vapor pressure, elevation in boiling point and depression in freezing…

Q: Suppose you have two colorless molecular liquids, one boilingat -84 °C, the other at 34 °C, and both…

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Q: 7.13 The vapor pressure of water at 25°C is 23.76 torr. (a) If 0.360 g of H,0 is placed in an empty…

A: Vapour pressure is a measure of the tendency of a material to change into the gaseous or vapour…

Q: Which has the smaller ΔH(hydr) in each pair of (a) Br⁻ or I⁻(b) Sc³⁺ or Ca²⁺(c) Br⁻ or…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: What is the vapor pressure of a liquid (in mmHg) at 308.01 K if its ∆Hvap = 28.9 kJ/mol and its…

A: The vapor pressure of any liquid at its normal boiling point = 760 mmHg  Hence, at normal boiling…

Q: The vapor pressure of CCl3F at 300 K is 856 torr.If 13 g of CCl3F is enclosed in a 1.2L container,…

A: Given,P = 856 torr = 1.126 atm  (since 760 torr = 1 atm)V = 1.2 LT = 300KR= 0.08206…

Q: 2. The boiling point of methanol is 338 K. What is the vapor pressure of methanol at 250 K, given…

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Q: ∆Sfus for Hg at its melting point (-39ºC) and 1 atm is (∆Hfus of Hg = 23 kJ/mol)   a. -0.59 j/k b.…

A: For a reversible process the entropy related to melting will be,ΔSfus = qrevT  also this can be…

Q: Which of the following compounds if equal molar amounts were added to 1L of water, would cause the…

A: Evolution in the boiling point is a colligative property. The value of colligative properties…

Q: Which of the following pairs of liquids will be miscible? O CH and CH2 O CH,COH and CCL O H0 and CH…

A: Miscibility of liquids depends upon the nature of liquid. If a polar solute is present, it will…

Q: What is the freezing point?

A: Given: Normal boiling point of solution=103°C Boiling point of H2O=100°C Kb=0.51°C/m Kf =1.86°C/m…

Q: Ethanol, with AHvap = 40.5 kJ mol1, has a higher AHvap than methanol, which is 35.2 kJ mol1, due to…

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Q: Which of the following statements best describe a minimum azeotrope? 1. Minimum azeotrope boils at…

A: Azeotrope can be defined as mixture of liquids that has a constant boiling point The boiling point…

Q: In hydrated compounds, the crystal water is bound to the salt by weak intermolecular forces, and…

A: Hydrated compounds are the crystalline salts that are loosely bound to certain number of water…

Q: You take a sample of water that is at room temperature andin contact with air and put it under a…

A: The first batch of bubbles appeared are due to the gas molecules that are leaving the water. This is…

Q: Which of the following gases does have a greater solubility in liquid water at 25 °C under the…

A: The solubility (S) of a gas in a liquid at a certain temperature is represented by the following…

Q: 1. The vapor pressure of water at 25C is 23.76 torr. If 1.25g of water is enclosed in a 1.5L…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What are the ideal van't Hoff factors for the following compounds Ba(ОН)2, С6н1206, КЗРО4, HNO3 ?* O…

A: Van't Hoff factor is the number of ions form when an ionic compound dissolved.

Q: 03, the odorous constituent of oil of wintergreen, has a vapor pressure of 1 10.0 torr at 95.3° C.…

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Q: you have a bottle of compound X at a pressure of 45atm and temperature of 100 C, what will happen if…

A: The answer is as follows:

Q: Diethyl ether (CH;CH2OCH2CH3) was one of the first chemicals used as an anesthetic. At 34.6°C,…

A: According to the clausius clapeyron equation ln(P2 / P1 ) = (-ΔHvap / R) X ( 1/T2 - 1/T1 )  where P2…

Q: What is the vapor pressure of a liquid (in mmHg) at 305.13 K if its AHvap = 28.9 kJ/mol and its…

A: Physical chemistry.

Q: AHp In Calculate the vapor pressure of pure water (in torr) at 58.0 °C, given that the enthalpy of…

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Q: At what temperature (in °C) does ethanol boil if 80.5 g of propylene glycol (molar mass = 76.11…

A: The question is based on the concept of solutions.   Molality is a method of expressing…

Q: Ethanol, with AHvap = 40.5 kJ mol, has a higher AHvap than methanol, which is 35.2 kJ mol, due to…

A: When the temperature of the volatile substance in liquid in increased below its boiling point, the…

Q: S c. Are the interacti 64. The vapor pressures of several solutions of water-propanol (CH;CH,CH2OH)…

A: Normal boiling point of a liquid is the temperature at which the vapor pressure is equal to the…

Q: The Δ?vapΔ⁢Hvap of a certain compound is 47.57 kJ·mol−147.57 kJ·mol−1 and its Δ?vapΔ⁢Svap is 67.46…

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Q: 7. The molar enthalpy of vaporization of hexane (C6H14) is 28.9 kJ/mol, and its normal boiling point…

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Q: Toluene (C7H8) is a common laboratory solvent with ΔH°vap = 38.1 kJ/mol. If the vapor pressure of…

A: Clausius-Clapeyron equation is given below.

Q: In what order should the boiling points of the substances MgO, Ne, and H2O decrease? Ne > water…

A: The boiling point is the temperature at which the vapor pressure of the liquid is equal to the…

Q: A certain substance X condenses at a temperature of 111.6 C. But if a 200. g sample of X is prepared…

A: Given that: Temperature (T1) = 111.6 C Mass of X substance = 200 g = 0.2 kg Mass of urea = 7.38 g…

Q: Does adding 1 mol of NaCl to 1 kg of water lower the vapor pressure of water to the same extent, a…

A: Yes, addition of 1 mol of NaCl to 1 kg of water lowers the vapor presure of water to the same…

Q: FREEZINO AND BOILING POINT ORAPH 25 15 Enorgy Anawer the folowing questione using the chart above.…

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Q: One of the attractive features of ionic liquids is their lowvapor pressure, which in turn tends to…

A: VAPOR PRESSURE: Vapor pressure is defined as the measure of the capability of a substance which can…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.