4. The vapor pressure of ethanol is 115 torr at 34.9 °C. If AHvap of ethanol is 40.5 kJ/mol, calculate the temperature (in °C) when the vapor pressure is 760 torr.

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A: Density of a substance can be defined as the mass of substance per unit volume of that substance.

Q: Two students measure the vapor pressure of the same unknown organic liquid and compare results. The…

A: The Clausius-Clapeyron equation is given as:

Q: When benzene freezes at 5.5 degree C its density changes from 0.879 g/ml to 0.891 g/ml. Its enthalpy…

A: Answer:During the fusion of solid benzene into liquid benzene relation between change in freezing…

Q: Given that the normal boiling point of CH3COCH3 is 56 °C, which of the following statements about…

A: Solutions Hence option (B) is correct answer The entropy of the surroundings increases

Q: The figure below is the phase diagram of a purse substance. (1), (II) and (III) are the 3 phases of…

A: The phase diagram is a graphical representation of the physical states of a substance under…

Q: The vapor pressure of acetone (C;H,O) at 39.5°C is 400 torr. (a) If the boiling point of acetone is…

A:

Q: A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 363.0 Torr at 45.0 °C. Calculate…

A:

Q: 2. The normal boiling point of the metal cesium (Cs) is 670.8 °C. At what temperature (in °C) would…

A: The objective of the question is to find the temperature at which the vapor pressure of cesium would…

Q: The standard enthalpy of vaporization (H°vap) of carbon tetrachloride (CCl4) is 34.6 kJ/mol. The…

A:

Q: A benzene sample with a mass of 47.7 g is removed from a freezer at an initial temperature of…

A: Given that : Mass of benzene sample (m) = 47.7 g Initial temperature = -10.20C Final temperature to…

Q: The normal boiling point of benzene is 80.1oC. What is the vapor pressure of benzene at 30.0oC? The…

A:

Q: Gases produced by a chemical reaction can easily be collected over water. To determine the pressure…

A: To determine the pressure of the hydrogen gas formed in this reaction, we need to subtract the vapor…

Q: At 47.77 °C, the vapor pressure of a particular compound is 8.53 kPa, and at 143.91 °C, its vapor…

A: Given that: temperature T1 = 47.77 °C = 47.77 + 273 = 320.77 K pressure P1 =  8.53 kPa temperature…

Q: ASAP PLEASE!  The boiling point of liquid B is 95.5 °C at 1 atm (760.0 torr). Its vapor pressure at…

A: Given -->  P1 = 325 torr P2 = 760 torr T1 = 73.5 °C = 346.5 K T2 = 95.5 °C  ∆Hvap = ? KJ/mol

Q: At 20.11 °C, the vapor pressure of a particular compound is 8.22 kPa, and at 146.6 °C, its vapor…

A: Dear student , since you have posted multiple questions we will allow to solve only first question…

Q: Determine the normal boiling point of a liquid with vapor pressure 63.8 mmHg at 36.50°C, given that…

A: Accoding to Clausius Clapeyron equation,At normal boling point, the vapor pressure equal= 760 mmHg

Q: 1) Consider the following reaction: Mg(s) + 2HCl(aq) MgCl₂(aq) + H₂(g) The total pressure of gas…

A:

Q: Water is found to have a vapor pressure of 1 atm at 373 K. Let Hvaporization = 40.7 kJ/mol. What is…

A: We have given that  Water is found to have a vapor pressure of 1 atm at 373 K. Let Hvaporization =…

Q: The vapor pressure of methyl alcohol at 50 deg Celcius is 0.530 atm. The molar enthalpy of…

A: Claussius Clapeyron equation help us in predicting enthalpy of vaporization , vapour pressure  and…

Q: A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 279.0 Torr at 45.0 °C. Calculate…

A: Given : We have to calculate delta H vaporization and normal boiling point.

Q: Define that When open to the atmosphere, water is in phase equilibrium with the vapor in the air if…

A: When a wet T-shirt hangs in an open area, it eventually dries. A small amount of water left in a…

Q: What would be the equilibrium temperature (oC) if you drop 5.0 g of brass (Cp = 0.38 J/g-oC,…

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Q: The enthalpy of vaporization of Substance X is 16.0kJmol and its normal boiling point is 123.°C.…

A: We have to Calculate the vapor pressure of X at −35°C.

Q: Liquid butane is used in cigarette lighters. The boiling point of butane at 1 atm pressure is -1.0…

A:

Q: ater, H₂O, is 0.000 °C at 1 atmosphere. K/(water) = 1.86 °C/m In a laboratory experiment, students…

A: Answer:Here:

Q: Determine the enthalpy of vaporization at 343.15 K for water. (Note: The heat of vaporization for…

A:

Q: certain liquid has a vapor pressure of 92.0 Torr92.0 Torr at 23.0 ∘C23.0⁢ ∘C and 339.0 Torr339.0…

A: P1 = 92.0torr          T1= 23°c+ 273.15= 296.15KP2= 339.0 torr.      T2 = 45°C + 273.15= 318.15k

Q: Visualizing physical states in a phase diagram Match each numbered point (1-3) in the phase diagram…

A: Point 1 is melting point curve Point 2 is vapourisation curve Point 3 is sublimation curve

Q: For benzene, the AH° of vaporization is 30.72 kJ/mol and the AS° of vaporization is 86.97 J/ mol·K.…

A: Standard Gibbs Free energy change of the any reaction is given by the expression, ∆Go=∆Ho-T∆So

Q: he organic compound n-hexane, C6H14, boils at 69.0°C. What is its molar heat of vaporization in…

A: We have to calculate the molar heat of vaporization.

Q: A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 387.0 Torr at 45.0 °C. Calculate…

A:

Q: Calculate the pressure on top of Mt. Whitney (14,495 ft above sea level: the highest point in US…

A: Use Clausius-Clapeyron equation: 1. Convert temperatures to KelvinNormal boiling point 33.9°C…

Q: The AHvap of a certain compound is 16.10 kJ · mol-1 and its ASvap is 58.41 J · mol- . K-1. What is…

A:

Q: The vapor pressure of benzene is 224 mmHg at 45 °C and 648 mmHg at 75 °C. (a) Find the enthalpy of…

A:

Q: For benzene, the AH° of vaporization is 30.72 kJ/mol and the AS° of vaporization is 86.97 J/mol·K.…

A:

Q: Predict the temperature at which CuSO4·5H2O undergoes dehydration.…

A: At equilibrium,the change in free energy is zero. The given reaction is at equilibrium. But,

Q: Which of the following graphs best represents the change in the total energy vs. temperature as N₂O…

A: In the given phase diagram of N2O, The far left region shows the solid phase of N2O. The far right…

Q: the vapor pressure of water is 44.2 atm at 454.9 K, and the vapor pressure of water is 51.5 atm at…

A:

Q: For the process X(1) X(g), where X is a metal, AH°-433.4 kJ/mol and AS°=101.1 J/(K mol). What is the…

A: GivenX(l) → X (g)∆H° = 433.4 kJ/mol1 kJ = 1000 J∆H° = 433400 J/mol∆S° = 101.1 J/K.mol

Q: What is the vapor pressure of ethanol (in mmHg) at 43.5 °C if its vapor pressure is 400.0 mmHg at…

A:

Q: The boiling point of propane at 1 atm (14.7 psi) pressure is -42.0 °C and its ∆H(vap) is 18.8…

A: The relationship between vapor pressure and temperature is given by clausius calpeyron equation…

Q: How much heat, in joules and in calories, must be added to a 89.1 g chromium block with a specific…

A: The relationship between the amount of heat of a substance and mass, specific heat, and change in…

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.