Dry nitrogen gas (100.0 L) was bubbled through liquid ethanol, C2H5OH, at a given temperature and the evaporated ethanol condensed; its mass was then measured. Using the data below, calculate the heat of vaporization (kJ/mol) of ethanol?

Dry nitrogen gas (100.0 L) was bubbled through liquid ethanol, C2H5OH, at a given temperature and the evaporated ethanol condensed; its mass was then measured. Using the data below, calculate the heat of vaporization (kJ/mol) of ethanol?

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter6: Equilibria In Single-component Systems

Section: Chapter Questions

Problem 6.8E

See similar textbooks

Related questions

Q: Which process will require the LEAST heat to occur? Heating 20.0 g of ethanol (c = 2.428 J/g · °C)…

Q: CaCl2 (MM = 110.98 g/mol) is used as road salt in the winter to minimize the accumulation of ice on…

A: On adding dissolving CaCl2, the temperature will change from initial value. Heat absorbed by water…

Q: One 63-g ice cube at 0.0 °C is dropped into 5.00 × 10² mL of tea to make iced tea. The tea was…

Q: The heat of vaporization of C₆H₆ at 1 atm is 94.4 cal/g. 100 g of C₆H₆ reacted at 80.2°C. Calculate…

A: Given: Mass of C6H6 = 100 g Heat of vaporization of C6H6 = 94.4 cal/g. External pressure = 1 atm.…

Q: 2. How much heat, in kilojoules, is needed to raise the temperature of 236 g of silver from 8.5oC to…

A: Given, mass of silver, m=236 g initial temperature, Ti=8.5°C Final temperature, Tf= 34.9°C Specific…

Q: A calorimeter contains 150 g water. The calorimeter and the water inside are both at 22 °C. A piece…

Q: The specific heat capacity of copper is 0.384 J /g* degrees C. What is the molar specific heat…

A: For copper, Specific heat capacity, Cs = 0.384 J / g ℃ Molar mass, M = 63.54 g mol-1 Molar heat…

Q: Calculate amount of heat (in kJ) required to raise the temperature of a 79.0 g of a substance by…

A: The solution is as follows:

Q: Duncan knows that it takes 36400 calcal of energy to heat a pint of water from room temperature to…

A: Duncan knows that it takes 36400 calcal of energy to heat a pint of water from room temperature to…

Q: the heat of vaporization of water is 2260 J/g. determine q when 100 g of steam at 100 C is condensed…

A: Given that Temperature = 100°C heat of vaporization = 2260j/mol…

Q: A 450 g H2O is heated from 10.5oC to 80.0oC. Calculate the amount of heat absorbed (in kilojoules)…

A: We have to predict the amount of heat absorbed.

Q: 3.15 mol of an unknown solid is placed into enough water to make 150.0 mL of solution. The…

A: Given moles (n) = 3.15 volume = 150 ml Temperature difference = 20.11°C specific heat (C) = 4.184…

Q: The molar heat of vaporization of ethanol is 39.3 kJ/mol and the boiling point of ethanol is 78.3°C.…

A: Entropy change of vaporization can be calculated by the following formula. ∆S=∆HvapT∆S=Entropy…

Q: Energy Constants for H2O 334 J/g = Heat of Fusion (Hf) 2260 J/g = Heat of Vaporization (Hv) 2.11…

A: The question is based on the concept of Hess law. it states that net enthalpy change remains…

Q: Consider the dissolution of CaCl2: CaCl2 (s) → Ca+ (ag) + 2 Cl (aq) AH = -81.5 kJ An 11.8-g sample…

A: Calculate the heat released when 11.8 g of CaCl2 is dissolved:

Q: Acetylene, C2H2, is used in welding torches. It releases a lot of energy when burned in oxygen.…

A: Given: One gram of acetylene releases 48.2 kJ The mass of the sample of acetylene is 0.82 g The heat…

Q: What is the definition of the specific heat capacity of a substance? the amount of heat required to…

Q: Acetylene, C2H2, is used in welding torches. It releases a lot of energy when burned in oxygen.…

Q: 1.75g CaCl2 dissolves 125g H2O in calorimeter, temp increases 2.44 degrees. what is heat change per…

A: Given that, Amount of CaCl2 w = 1.75 g Molar mass of CaCl2 Mw = 110.98 g/mol Weight of water in…

Q: A 33.5-ml sample of benzene at 39.2°C was cooled to its melting point, 5.5 °C, and then frozen at…

A: Volume of benzene = 33.5ml Density of benzene = 0.876g/ml Ti = 39.2∘C Melting point = 5.5°C Cpl =…

Q: A 25.0 g sample of lead, specific heat = 0.128 J/goC, was warmed from 35.0 oC to 200.0 oC. The same…

A: The total amount of heat absorbed by the lead is; Q=mc∆T=25.0 g×0.128 J/g oC×200.0oC-35.0oC=528 J

Q: A gold coin whose mass is 8.75 g is heated to 121.1°C and then quickly dropped into an ice…

Q: A 4.3 kg sample has specific heat 4.1 kJ/(kg °C) and initial temperature 69 °C.What will be the…

A: Given, mass of sample =4.3 kgspecific heat =4.1 kJ/kg.°Cinitial temperature =69 °Cheat absorbs =120…

Q: Consider the dissolution of CaCl2 : CaCl2 (s) → Ca2+ (ag) + 2 C1-(ag) AH = -81.5 kJ An 11.7-g sample…

A: ΔH = -81.5 kJ of 1 mol CaCl2 Molar mass of CaCl2 = 110.98 g /mol Moles of CaCl2 present in solution…

Q: a) A person drinks four glasses of cold water (3.0°C) every day. The volume of each glass…

A: Given: volume=2.6×102 mLInitial temperature=3.0oCFinal temperature=37oC To find: Heat supplied

Q: Using a coffee-cup calorimeter it was found that when an ice cube weighing 24.60 g melts, it absorbs…

A: ∆H ( enthalpy of fusion ) for this melting process is calculated in kJ/mol using formula : ∆H = q /…

Q: 2. If a 50g sample of water at a temperature of 95°C is added to 89g sample of water at 25°C, what…

A: Given: mass of water

Q: The familiar "ether" used as an anaesthetic agent is diethyl ether, C4H20O. Its heat of vaporization…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: Calculate the amount of heat absorbed by a 40.0 g sample of water at 21 °C when the temperature is…

A: The amount of heat absorbed by water is 2.3 kJ. Correct option -- 2.3 kJ

Q: AH°, of H,O, is -285.8 KJ/mol and AH°, of H,O is -241.8 KJ/mol, then e AH°, of condensation of H,O,…

Q: 1. The phase change between graphite and diamond is difficult to observe directly. Both substances…

A: According to Hess's law, the standard enthalpy change for a reaction is the sum of the standard…

Q: 67.0 mL of hot water (45.4 oC) is added to 45.0 mL of cold water (22.3 oC). Upon mixing the water…

Q: The following information is given for mercury, Hg, at 1 atm: boiling point = 357 °C AH ap(357 °C) =…

A: The change in enthalpy of a chemical reaction is the total amount of heat released or absorbed in…

Q: Which of the substances have a standard heat of formation (AH;) of zero? Fe at 1200 °C 0,(g) at 25.0…

Q: The heat absorbed or liberated by a substance (q) can be calculated using the following equation: q…

A: Matter exists in different states. Solid, liquid, gas are the three states of matter. Change of…

Q: How much heat is absorbed by 20 g of gold when it is heated from 25oC to 35oC? The specific heat of…

Q: Energy Constants for H2O 334 J/g = Heat of Fusion (Hf) 2260 J/g = Heat of Vaporization (Hv) 2.11…

A: Answer:- This question is answer by using the simple concept of calorimetry which state that heat…

Q: 3. What mass of aluminum metal would absorb 250.0 ķJ when it melted at its melting point? The molar…

A: Heat absorb by Al is given and molar enthalpy of fusion for aluminium is also given so apply formula…

Q: Which produces more heat?Os(s) ⟶ 2O2(g) ⟶ OsO4(s)orOs(s) ⟶ 2O2(g) ⟶ OsO4(g)for the phase change…

Q: 76. The evaporation of water is endothermic: H2O(1) – → H,O(g) AHxn = +44.01 kJ %3D What minimum…

A: The evaporation of water is an endothermic process. The enthalpy of evaporation is given by: The…

Q: If a 50g sample of water at a temperature of 100 oC is added to a 25g sample of water at 25 oC, what…

Q: A gold coin whose mass is 8.47 g is heated to 138.9oC and then quickly dropped into an ice…

A: Given: The mass of a gold coin is 8.47 g. The initial temperature of the coin is 138.9°C. The molar…

Q: If 75.4 J of energy is absorbed by 0.25 mol of CCl4 at constant pressure, what is the change in…

A: Given, 75.4 J of energy is absorbed by 0.25 mol of CCl4 at constant pressure specific heat of CCl4…

Q: The following information is given for benzene, C6H6, at 1atm: AHvap(80.1 °C) = 30.7 kJ/mol boiling…

A: Here, we have to find the ∆H for the process of condensing 47.4 g of gaseous benzene at its normal…

Q: The specific heat capacity of liquid bromine is 0.226 J g^−1 K^−1. How much heat is required to…

A: In this question, we have to calculate the heat needed to raise the temperature of 31.2 g of bromine…

Q: The burning of 28g of vegetable cause the temperature of 58.18 g of water in a soda can calorimeter…

Q: Calculate the ΔS of vaporization (in J/mol∙K) which boils at 728.7 oC. Its heat of vaporization,…

A: Given ΔS = ? ΔH°vap = 82.8 kJ/mol boiling temperature (Tb) = 728.7°C

Q: Which material will show the smallest temperature change upon absorbing the same amount of heat (SH…

A: The heat required to raise the temperature of 1 g of a substance by 10C is known as specific heat…

Q: Suppose 2.32 kJ of heat is added to 25.4 g of ethanol at 18.71 °C. The specific heat capacity of…

Q: Calculate the amount of heat (in kJ) required to raise the temperature of a 86.0 g sample of ethanol…

A: The temperature change (ΔT) is given.

Question

Dry nitrogen gas (100.0 L) was bubbled through liquid ethanol, C₂H₅OH, at a given temperature and the evaporated ethanol condensed; its mass was then measured. Using the data below, calculate the heat of vaporization (kJ/mol) of ethanol?

Temperature, °C
Mass C2H5OH collected, g
4.679
6.122
23.72
16.71

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Which of the following quantities can be taken to be independent of temperature? independent of pressure? (a) H for a reaction (b) S for a reaction (c) G for a reaction (d) S for a substance
What is the temperature of 0.225 mole of neon in a 2.00 L vessel at 4.32 bar? R = 0.08314 L･bar/mol･K.
What is the temperature of 0.630 mole of neon in a 2.00 L vessel at 4.32 bar? R=0.08314 L•bar/mol•k
The normal boiling point of benzene is 80 °C. At 100 °C and 1 atm, which term isgreater in magnitude for the vaporization of benzene, ΔH or -TΔS?
a. Consider the data below for the reaction H2O(l) ⇌ H2O(g) . Plot a graph and determine ΔH and ΔS for the reaction. Describe how they influence the spontaneity of the reaction as a function of temperature. T (°C) P (torr) 0.0 4.579 10.0 9.209 20.0 17.53 25.0 23.76 30.0 31.82 40.0 55.32 60.0 149.4 70.0 233.7 90.0 525.8 Explain how the boiling point temperature of H2O(l) (at sea level) can be accurately determined from the data in a.? c. For the reaction in a., ΔE is less than ΔH. Explain.
Part iii. The student claims that the final partial pressure of CH3OH(g) is very small but not exactly zero. Do you agree or disagree with the stduent's claim? Justify your answer.
Why do exothermic processes tend to be spontaneous at lowtemperatures? Why does their tendency
A cylinder in a car engine takes 4.50 x 10-2m3air into the chamber at 303.15 Kand at atmospheric pressure (1.013 x 105Pa). The piston then compresses the air to 10 % of the original volume and 20 times the original pressure(R = 8.314 J/mol K). (i). Calculate the number of moles in the air. (ii). What is the new temperature of the air?
Calculate ΔSvap for hydrogen sulfide from the following data: normal boiling point of H2S: -60.7oC ΔHvap of H2S: 18.7 kJ/mol Place ΔSvap in units of J/(mol K) and your answer should have 3 significant figures.
What is the value for absolute zero?Where in the universe is the coldest temperature found naturally and why might it not stay so low? What is the coldest temperature developed under laboratory conditions and by what means was this obtained. Why is Absolute Zero a theoretical value? Benefits derive from reaching absolute zero or near absolute zero.
The following is a table of water vapor pressure in millibar (mbar) vs Temp in oC. In your own words, explain what equilibrium this represents, making sure to include an equation, and why it changes with temperature. T (°C) P (mbar) 15 17.1 16 18.1 17 19.3 18 20.7 19 22.0 20 23.3 21 24.9 22 26.4 23 28.1 24 29.9 25 31.7 26 33.6 27 35.6 28 37.7 29 40.0 30 42.4
1.Physical or chemical change that occurs with no outside assistanceSuccessives ProcessesSpontaneous ProcessesChemical ProcessesTransient Processes2. Determine the “disorder of the system” NH3 (g) → NH3 (aq) NegativePositiveDecreaseIncrease3. When does “the measure of the disorder of a system” increase?greater product molecules than reactant moleculesTemperature decreasePhase Change form solid to gasWhen a substance is formed from parts4. Determine the “disorder of the system” FeS (s) → Fe2+(aq) + S2-(aq)Decrease Positive Negative Increase5. 4. In a________, changes occur to the fundamental particles of the nucleus of an individual atom which means that the atom changes from one element to another.Nuclear FissionChemical ReactionNuclear ReactionNeutral Reaction