Explain the molar enthalpy of vaporization, of a substance

Assignment Help Chemistry
Reference no: EM13301655

Use Kirchoff's law to calculate ?vapH , the molar enthalpy of vaporization, of a substance at 218.15 K, given that its standard enthalpy of vaporization is ?vapH=32.45 kJ mol at 25.0ºC. The heat capacities are Cp,m liq= 46.20 J K?1 mol?1 for the liquid and Cp,m vap = 32.50 J K?1 mol?1 for the vapor.

Reference no: EM13301655

Questions Cloud

Compute q and w for the process where the gas is heated : A perfect gas has a constant volume heat capacity of C R V m = 1.5×R, . Calculate q and w for the process where 4.50 mol of this gas is heated with a 12 W heater for 400 seconds at a constant volume.
Find the minimum voltage applied to the tube : The minimum-wavelength X-ray produced by a certain X-ray tube is 0.283 nm. Find the minimum voltage applied to the tube
Evaluate the equilibrium constant for the reaction : Given the thermodynamic data in the table below, calculate the equilibrium constant (at 298 K) for the reaction: 2SO2 + 02 --------> 2SO3 dH -297 , 0, -395 dS 249, 205, 256 ( in order of problem )
Elite furniture topic: using inferior materials : Elite Furniture Topic: Using Inferior Materials
Explain the molar enthalpy of vaporization, of a substance : Use Kirchoff's law to calculate ?vapH , the molar enthalpy of vaporization, of a substance at 218.15 K, given that its standard enthalpy of vaporization is ?vapH=32.45 kJ mol at 25.0ºC.
Calculate the cost and selling price : Calculate the cost and selling price of one pound of cashews and one pound of chestnuts and using an activity-based costing approach and the information provided, calculate the cost and selling price of one pound of cashews and one pound of chestnu..
Sociocultural events : Please have Carlos Holmes as my expert, Carlos has been my expert on this on-going assignment and knows the content.
Building up infrastructure like high speed rail roads : Opportunity cost – faced by any company or country or government in choosing something and leaving other alternates For example – delay in setting up broad band in Australia or not building up infrastructure like high speed rail, roads, housing or po..
Explain transmittance t is defined as the intensity : Transmittance, T, is defined as the intensity of light transmitted through a sample divided by the intensity of light incident on the sample. The absorbance, A, is defined as

Reviews

Write a Review

Chemistry Questions & Answers

  How many grams of water can be cooled

How many grams of water can be cooled from 36 degrees celsius to 23 degrees celsius by the evaporation of 53g of water.

  Explain the following five solutions are mixed together

when the following five solutions are mixed together, only one reaction occurs. write the net ionic equation for that precipitation reaction. KCl(aq),Cu(NO3)(aq),AgNO3(aq),CaCl2(aq),and Ba(No3)2(aq)

  What is the specific heat of the metal

A metal object with a mass of 19g is heated to 96c, then transferred to a calorimeter containing 75g of water at 18c. The water and teh metal object reach a final temperature of 22c.

  Determine the molarity of a solution

Determine the molarity of a solution prepared by dissolving 4.50 mol of NH4Cl in sufficient water to make 2.00 L of solution.

  Compute the mole fraction of component

The average molecular weight of the protein by gel permeation is 525000 g mass/g mol. Calculate the mole fraction of each component in solution.

  Why is the buffer most effective

Thus, as long as the concentrations of HA(aq) and A-(aq) are not consumed, the pH change is minimal compared to addition to a non-buffer solution. Why is the buffer most effective when pH = pKa?

  State increase partial pressure of co2 at equilibrium

Consider the following reaction at equilibrium: 2CO2(g) 2CO(g) + O2(g) Change in H degree = -514kJ a) increase partial pressure of CO2 at equilibrium

  The cyclohexyl carbocation undergoes attack by nucleophiles

Cyclohexyl carbocation undergoes attack by nucleophiles. With this in mind, propose a mechanism whereby cyclohexene might form the dimer 31 in the presence of H3O+. Note that this type of reaction leads to polymerization of cyclohexene.

  Compute the number of pounds of co2

Calculate the number of pounds of CO2 released into the atmosphere when a 18.0-gallon tank of gasoline is burned in an automobile engine.

  What is the value of heat

suppose that coal of density 1.5g/cm3 is pure carbon. the combustion of carbon is described by the question   C(s)+ 02(g)- CO2 H= -394kJ

  How many moles of h2o are needed

Acetylene gas (C2H2) is produced as a result of the following reaction. CaC2(s)+2H2O(l) = C2H2(g)+Ca(OH)2(aq) . If 32.0 g of CaC2 are consumed in this reaction, how many moles of H2O are needed?

  Calculate the molarity of the hcl solution

A sample of 0.0020 mole of HCl is dissolved in water to make a 2000mL solution. Calculate the molarity of the HCl solution, the {H3O}, and the pH.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd