Evaluate the change in enthalpy for the chcl3 sample

Assignment Help Chemistry
Reference no: EM13561026

Cp,m for CHCl3 is (91.47 + 7.5x10-2T) J/(K mol) in a limited temperature range. One mol of this compound at 325 K is cooled at constant P to 275 K by contact with a large reserve at 275 K. The temperature of the reserve does not change. Calculate the change in enthalpy for the CHCl3 sample and change in entropy for the CHCl3 sample. Finally, Calculate the change in entropy for the reserve and change entropy of the universe.

Reference no: EM13561026

Questions Cloud

Estimate what pressure is exerted on the floor : A 75-kg athlete does a single-hand handstand. If the area of the hand in contact with the floor is 125 cm2, what pressure is exerted on the floor
What hope for the future is evident by the end of play : Why is there a conflict between Dr. Thomas Stockmann and his brother, the mayor, Peter Stockmann? Who is right - What hope for the future is evident by the end of this play?
Calculate what is its speed when it strikes the earth : An object is dropped from rest from aheight of 40 million meters above surface of the earth. If there isno air resistance, what is its speed when it strikes the earth
What is the frequency of the radar waves : A marine radar operates at a wavelength of 3.2cm and a powerof 7.0kW per pulse. what is the frequency of the radar waves
Evaluate the change in enthalpy for the chcl3 sample : Calculate the change in enthalpy for the CHCl3 sample and change in entropy for the CHCl3 sample. Finally, Calculate the change in entropy for the reserve and change entropy of the universe.
How the image narrates its content : Explication of how the image is framed by and mobilized within an "aesthetic field" - how the image narrates its content
Explain one mol of the compound at 325 k is cooled : One mol of this compound at 325 K is cooled at constant P to 275 K by contact with a large reserve at 275 K. The temperature of the reserve does not change.
How much thicker is the center than the edges : A total of 31 bright and 31 dark Newton's rings (not countingthe dark spot at the center) are observed when 550 nm light fallsnormally on a planoconvex lens resting on a flat glass surface. How much thicker is the center than the edges
Explain a one-mole sample of a monatomic perfect gas : A one-mole sample of a monatomic perfect gas with a constant pressure heat capacity of 20.85 J/(K mol) is initially at a pressure of 3.25 bar at 200 K. It undergoes an adiabatic reversible expansion until its pressure is 1.52 bar. Calculate: q, w,..

Reviews

Write a Review

Chemistry Questions & Answers

  Explain the hazards associated with ch3cooh solution

explain the hazards associated with 1.0M CH3COOH solution, 0.10M BaCl2 solution and 0.10M Na2C2O4 solution.

  Explain briefly describe synthetic strategy

Identify the reagents you would need to make the following substance via Grignard synthesis, and briefly describe your synthetic strategy.

  How many moles of cds is formed

When 25.0 mL of 0.750 M CdCl2 is mixed with 40.0 mL of 0.120 M (NH4)2S, CdS precipitates from the solution. How many moles of CdS is formed.

  Explain the average atomic mass of magnesium

Suppose that the atomic mass unit (amu) had been defined as one-eighth of the average mass of an atom of sodium instead of one-twelfth of the mass of an atom of carbon-12. What would the average atomic mass of magnesium be on this new scale

  Describe what is the percent ionization

The Ka of a monoprotic weak acid is 7.78 × 10-3. What is the percent ionization of a 0.141 M solution of this acid?

  Explain only dipole-dipole forces must be overcome

Choose the selection which correctly identifies the forces which must be overcome to convert BH3 from a liquid to a gas.

  Calculate the mole fraction of toluene

Toluene (C6H5CH3) is a liquid compound similar to benzene (C6H6). Calculate the mole fraction of toluene in the solution that contains 132 g toluene and 115 g benzene.

  Find out the enthalpy of combustion of hydrazine

Hydrazine is used as a rocket fuel. when 1.5 g of hydrazine N2H4, was burned in a bomb calorimeter, temp increased from 23.57 degrees celcius to 28.84 degrees celcius. The heat capacity of the calorimeter was 5.510 kJ/degree celcius. Determine the..

  Describe what is occuring at nanoscale during energy

sodium hydroxide reacts with sulfuric acid to produce sodium sulfate and water. how many grams of sodium hydroxide are

  State a new potential heart medicine

A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak acid,

  Calculate the amount of heat required

Calculate the amount of heat required to heat a 3.5 kg gold bar from 21 degrees celsius to 67 degrees celcius.

  Explain what volume of 4.00 m hcl is required to react

What volume of 4.00 M HCL is required to react with excess NaCN to produce enough HCN to fill a room 16x7x4 feet at a pressure of 850 mmHg and 65 F

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