Enthalpy, Chemistry

Assignment Help:

Enthalpy, H, is defined by the relationship H=U+pV. The enthalpy change, ΔH, for finite changes at constant pressure is given by the expression ΔH = ΔU+pΔV, so making the enthalpy change for a process equals to the heat exchange in a system at constant pressure. For a chemical system which releases or absorbs a gas at constant pressure, the enthalpy change is related to the internal energy change by ΔH=ΔU+Δn.RT, where Δn is the molar change in gaseous component some other process occurring.

The enthalpy, H, is defined by the expression; H=U+pV, Hence for a finite change at constant pressure:

ΔH=ΔU+ pexΔV

 

 


Related Discussions:- Enthalpy

Percentage of hydrozen for conjugate acid and conjugate base, Formic acid i...

Formic acid is a weak acid along with a pKa of 3.75. The name comes by the Latin term "formica" ("ant") since this is very plentiful into the secretions of several species of ants,

The ground state term symbol for an electronic state, The ground state term...

The ground state term symbol for an electronic state is governed by : (1) Heisenberg's principle  (2) Hund's rule (3) Aufbau principle (4) Pauli exclusion principle

Mole M&M problem, 200.0 M&Ms mass out at 175 grams. How many tons of M&Ms a...

200.0 M&Ms mass out at 175 grams. How many tons of M&Ms are there in one mole?

Physical and derived quantities, 1. Discuss how such discoveries, technolog...

1. Discuss how such discoveries, technological advancement and breakthroughs were achieved and the person behind this advancement, it can be local or international. 2. List the ma

Electrolysis of water, Electrolysis of Water without Indicator • Assembl...

Electrolysis of Water without Indicator • Assemble the power supply for electrolysis. Attach alligator clips to the separate poles of the battery. Make sure that the wires from

Orbital with maximum energy, The orbital with maximum energy is: (1) 3d...

The orbital with maximum energy is: (1) 3d            (2) 5p       (3) 4s             (4) 6d Ans: 6d

Chain, Chain, nuclear or skeleton isomerism: This form of isomerism ar...

Chain, nuclear or skeleton isomerism: This form of isomerism arises because of the difference in the nature of the carbon chain (that is straight or branched) which makes the

Describe about halide minerals, Q. Describe about Halide Minerals? High...

Q. Describe about Halide Minerals? Highly electropositive alkali and alkaline earth metals tend to form halide salts, which being soluble in water are washed away into the ocea

Write Your Message!

Captcha
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