Given the enthalpy of fusion of water is 6.1 kJ/mol and water normally freezes at 273K. calculate the number of moles/kg water of NaCl or CaCl₂ needed to low the freezing temperature of water by 10 degree.

Given the enthalpy of fusion of water is 6.1 kJ/mol and water normally freezes at 273K. calculate the number of moles/kg water of NaCl or CaCl₂ needed to low the freezing temperature of water by 10 degree.

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter16: Spontaneity Of Reaction

Section: Chapter Questions

Problem 93QAP

See similar textbooks

Related questions

Q: The enthalpy of vaporization of Substance X is 15.0 Round your answer to 2 significant digits. 0 atm…

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: Propane has a normal boiling point of -42.0° C and a heat of vaporization (AHvap) of 19.04 kJ/mol.…

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

Q: A student dissolves 12.52 grams of magnesium iodide, MgI, (278.1 g/mol), in 271.3 grams of water.…

Q: Determine the lattice energy of NaCl(s), using the data provided.

A: This question can be solved using the Born-Haber cycle equation. Given, Sublimation energy = 109.0…

Q: Naphthalene 1C10H82 is the main ingredient in traditionalmothballs. Its normal melting point is 81…

A: The triple point is defined as that temperature and pressure where all the three phases exist in…

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 latent heat of fusion of water at 0Cis 6.025 kJ/mol and the molar heat capacities (Cp,m) of…

Q: he enthalpy of solution of an ionic compound can be calculated from its lattice enthalpy and the…

A: Enthalpy of solution: Enthalpy change of solution is the enthalpy change when 1 mole of an ionic…

Q: Mercury (Hg) vapor is toxic and readily absorbed from the lungs. At 20.∘C, mercury (ΔHvap = 59.1…

A: Given data Vapor pressure [ at T1 = 20 oC ] , P1 = 1.20x10-3 torr ΔHvap = 59.1 kJ/mole Safer…

Q: The vapor pressure of ethanol, C2, H5, OH, at 50.0°C is 233 mm Hg, and its normal boiling point at 1…

Q: The vapor pressure of water at 55ºC and 65ºC are 118.1 torr and 187.7 torr, respectively. What is…

Q: At 0.00 °C, hexane, C6H14, has a vapor pressure of 45.37 mm Hg. Its AHvap is 30.1 kJ mol-¹. What is…

A: The Clausius-Clapeyron Equation is used to measure the vapor pressure of a liquid at any…

Q: In determining properties such as solubility, melting point, and boiling point, intramolecular…

A: The forces which provide interaction including force of repulsion and attraction acting between the…

Q: The enthalpy of vaporization of water is larger than its enthalpy of fusion. Explain why.

A: Given:It is given that,"The enthalpy of vaporization of water is larger than its enthalpy of…

Q: The ambient temperature is 85.0°F and the humidity of the surrounding air is reported to be 64.0%.…

A: Clausius-Clapeyron equation is given below.

Q: Ethylene glycol is used in antifreeze. What is the vapor pressure of ethylene glycol at 100 oC in…

Q: The vapor pressure of solid iodine at 25 °C is 0.001864 atm. Calculate the vapor pressure in kPa.…

A: The detailed solution is given in the following step

Q: The freezing point of water is 0.00 °C at 1 atmosphere. A student dissolves 11.60 grams of…

A: Answer:Depression in freezing point of a solution when non-volatile electrolyte is added in it as…

Q: The enthalpy of vaporization of Substance X is 25.0 Round your answer to 2 significant digits. kJ…

A: According to the Clausius-Clapeyron equation:... (1)Here, P1 = vapor pressure at temperature T1P2 =…

Q: Which will have a greater vapor pressure methyl Amine (CH3NH2) or chloroform (CHCl3)? (briefly…

Q: A solution of methylene chloride (CH2Cl2) and ethanol (CH3CH2OH) that is 10.% methylene chloride by…

A: The mole fraction of methyl chloride (χM) at 750C is calculated as shown in equation (1) where P0M…

Q: The enthalpy of vaporization of Substance X is 7.00 Round your answer to 2 significant digits. 0 atm…

Q: Consider water H2O. Predict how waters boiling point compares to HBr and HF. Explain your prediction…

A: Higher the intermolecular forces higher will be the boiling point of that particular compound. If…

Q: The vapor pressure of methanol at 20.0 oC is 97.7 torr. The normal boiling point of methanol is 64.7…

A: Given data,T1(Temperature of methanol)=20.0oC=20.0+273.15=293.15KP1(pressure of methol)=97.7 torrT2(…

Q: 3. (a) The Lattice enthalpy for the solid ionic compound AgBr is +900. kJ/mole. Write the chemical…

A: Enthalpy of lattice refers to the quantity of energy needed to convert 1 mole of ionic solid to…

Q: Carbon tetrachloride, CCl4, was once used as a dry cleaning solvent, but is no longer used because…

A: The temperature at which the vapor pressure of a liquid becomes equal to an atmospheric pressure is…

Q: Calculate the freezing and boiling points for 0.45 mol ethylene glycol a d 0.15 mol KBr in 150 gram…

A: kf for water is 1.186K.kg.mol-1.kb for water is 0.512 K.kg.mol-1.The freezing point for 0.45mol…

Q: Suppose that the amount of heat removed when 15.6 kg of water freezes at 0.0 °C were removed from…

A: Given : To find :

Q: The freezing point of water is 0.00 °C at 1 atmosphere. A student dissolves 11.60 grams of…

A: molality is a method of expressing concentration of the solution. it is defined as number of moles…

Q: Four liquids are described in the table below. Use the second column of the table to explain the…

A: F- Calcium chloride will have the lowest freezing point (1) due to the highest number of particles.-…

Q: Calculate the freezing and boiling point of 0.25m glucose in ethanol. Ethanol normal boiling point…

A: The freezing point depression and boiling point elevation are given by

Q: Energy to sublime Na(s) = 109.0 kJ/molElectron affinity of Cl(g) = -349.0 kJ/molFirst ionization…

A: The given processes are represented as follows:

Q: A certain nonvolatile hydrocarbon that weighed 1.00 g was dissolved in 50.00 g of benzene. The…

A: Since you have posted multiple questions, as per our company guidelines we are supposed to answer…

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: The vapor pressure of a liquid doubles when the temperature is raised from 75°C to 85°C. At what…

Q: What is Δq for the vaporization of 50.0 g of Compound A (76.03 g/mol; ΔHvap is 31.6 kJ/mol)?

A: Heat of vapourisation is the enthalpy change when one mole of a substance is vapourised.

Q: Describe a detailed procedure that allows the student to purify this mixture.

A: According to the question the three organic solvents are miscible. But, their boiling point are…

Q: Ethylene glycol has a vapor pressure of 14.9 Torr at 373K and a vapor pressure of 49.1 Torr at 398K.…

A: Given : vapour pressure at 373 K = 14.9 torr and vapour pressure at 398 K = 49.1 torr The…

Q: Naphthalene undergoes sublimation: C10H3(s)C10Halg). In a closed container at 800.0 K, the…

A: Kp = 0.70torr

Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

Given the enthalpy of fusion of water
is 6.1 kJ/mol and water normally
freezes at 273K. calculate the number
of moles/kg water of NaCl or CaCl₂
needed to low the freezing
temperature of water by 10 degree.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1: Introduction

VIEW

Step 2: To Find

VIEW

Solution

VIEW

Step by step

Solved in 3 steps with 1 images

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

In the northern United States, summer cottages are usually closed up for the winter. When doing so, the owners winterize the plumbing by putting antifreeze in the toilet tanks, for example. Will adding 525 g of HOCH2CH2OH to 3.00 kg of water ensure that the water will not freeze at 25 C?
What mass (g) of ethanol, CH3CH2OH(), can be vaporized at its boiling point of 78.4 C by transfer of 500. kJ to the liquid? The vapH of ethanol is 38.6 kJ/mol at this temperature.
Define critical temperature and critical pressure. In terms of the kinetic molecular theory, why is it impossible for a substance to exist as a liquid above its critical temperature?
In some regions of the southwest United States, the water is very hard. For example, in Las Cruces, New Mexico, the tap water contains about 560 g of dissolved solids per milliliter. Reverse osmosis units are marketed in this area to soften water. A typical unit exerts a pressure of 8.0 atm and can produce 45 L water per day. a. Assuming all of the dissolved solids are MgCO3 and assuming a temperature of 27C, what total volume of water must be processed to produce 45 L pure water? b. Would the same system work for purifying seawater? (Assume seawater is 0.60 M NaCl.)
A mixture of toluene (bp110.8C) and water is steam distilled. Visual inspection of the distillate reveals that there is a greater volume of toluene than water present, yet water (bp100C) has the higher vapor pressure. Explain this observation.
When KNO3 is dissolved in water, the resulting solution is significantly colder than the water was originally. (a) Is the dissolution of KNO3 an endothermic or an exothermic process? (b) What conclusions can you draw about the intermolecular attractions involved in the process? (c) Is the resulting solution an ideal solution?
Lattice enthalpy for NaCl is +788 kJ mol¹ and AH = -784 kJ mol¹. Enthalpy of Hyd solution of NaCl is
Part C Caloulate the freering point for 19.0g of decane, CHn1.0g CHCl. Express your answer uning one decimal plece fp- "C Submit Part D Calculate the boling point tor 10.0g of decane, C H, in 51.0g CHCH. Express your anewer using one decimal place. bp= "C Beaunst Aneme Submit Part E Calculate the freezing point for 0.44 mol ethylene glycol and 0.18 mol KBr in 170g H30. Express your answer using ane decimal place.
3. (a) The Lattice enthalpy for the solid ionic compound AgBr is +900. kJ/mole. Write the chemical equation that corresponds to the Lattice Enthalpy for AgBr(s) in the space above. Then explain in your own words why this is a large positive number. (b) The hydration enthalpy for AgBris -821 kJ/mole. Write the chemical equation that corresponds to the Hydration Enthalpy for AgBr(s) in the space above. Then explain in your own words why this is a large negative number. (c) Would you expect this compound to be soluble in water? Why/Why not? Calculate anything you need in order to figure this out, and explain your answer.
At 25°C, some water is added to a sample of gaseousmethane (CH4) at 1.00 atm pressure in a closed vessel, andthe vessel is shaken until as much methane as possible dissolves. Then 1.00 kg of the solution is removed and boiledto expel the methane, yielding a volume of 3.01 L ofCH4(g) at 0°C and 1.00 atm. Determine the Henry’s lawconstant for methane in water.
3. (a) The Lattice enthalpy for the solid ionic compound AgBr is +900. kJ/mole. Write the chemical equation that corresponds to the Lattice Enthalpy for AgBr(s) in the space above. Then explain in your own words why this is a large positive number. (b) The hydration enthalpy for AgBr is -821 kJ/mole. Write the chemical equation that corresponds to the Hydration Enthalpy for AgBr(s) in the space above. Then explain in your own words why this is a large negative number.…
Aerosols are important components of the atmosphere.Does the presence of aerosols in the atmosphere increase ordecrease the amount of sunlight that arrives at the Earth’ssurface, compared to an “aerosol-free” atmosphere? Explainyour reasoning.