DE meaning in Chemistry ?

tuteeHUB earn credit +10 pts

Answer:

What is Dissociation Energy mean?

The bond-dissociation energy (BDE, D0, or DH°) is one measure of the strength of a chemical bond A–B. It can be defined as the standard enthalpy change when A–B is cleaved by homolysis to give fragments A and B, which are usually radical species. The enthalpy change is temperature-dependent, and the bond-dissociation energy is often defined to be the enthalpy change of the homolysis at 0 K (absolute zero), although the enthalpy change at 298 K (standard conditions) is also a frequently encountered parameter. As a typical example, the bond-dissociation energy for one of the C−H bonds in ethane (C2H6) is defined as the standard enthalpy change of the process

CH3CH2–H → CH3CH2• + H•,DH°298(CH3CH2−H) = Δ = 101.1(4) kcal/mol = 423.0 ± 1.7 kJ/mol = 4.40(2) eV (per bond).

To convert a molar BDE to the energy needed to dissociate the bond per molecule, the conversion factor 23.060 kcal/mol (96.485 kJ/mol) for each eV can be used.

A variety of experimental techniques, including spectrometric determination of energy levels, generation of radicals by pyrolysis or photolysis, measurements of chemical kinetics and equilibrium, and various calorimetric and electrochemical methods have been used to measure bond dissociation energy values. Nevertheless, bond dissociation energy measurements are challenging and are subject to considerable error. The majority of currently known values are accurate to within ±1 or 2 kcal/mol (4–10 kJ/mol). Moreover, values measured in the past, especially before the 1970s, can be especially unreliable and have been subject to revisions on the order of 10 kcal/mol (e.g., benzene C–H bonds, from 103 kcal/mol in 1965 to the modern accepted value of 112.9(5) kcal/mol). Even in modern times (between 1990 and 2004), the O−H bond of phenol has been reported to be anywhere from 85.8 to 91.0 kcal/mol. On the other hand, the bond dissociation energy of H2 at 298 K has been measured to high precision and accuracy: DH°298(H−H) = 104.1539(1) kcal/mol.

reference
Full Form Category
Device- End Academic & Science
Differently Evolving Academic & Science
Data Engineering Academic & Science
Department of Ecology Academic & Science
Differential Evolution Academic & Science
Dwarf Elliptical Academic & Science
Double Entry Accounts and Finance
Dailey Enterprizes Business
Deere & Company Business
Development of Entrepreneurs Business
Delaware Ed's Business
District Executive Business
Double Ended Business
Delay Evaluation Business
Double Exchange Chemistry
Dissociation Energy Chemistry
Decomposition Element Chemistry
Disciple Experiment Community
Deaf Ears Community
Dale Earnhardt Community
Distance Education Community
Decent Elders Community
Digital Edition Community
Driver Education Community
Delete Entity Computer Assembly Language
Digital Environment Computer Hardware
Data Entry Database Management
Duplicate Elimination Database Management
Data Environemnt Database Management
Diatomaceous Earth Earth Science
Device Emulator Electronics
Dull Emitter Electronics
Defensive End General
Dumb Ent General
Dark Elf General
Dell Edition General
Destroy Evidence General
Death Eaters General
Design Engineering General
Double Edge General
Delegated Examining General
Date of Expiry General
Direct Endorsement General
Decision Engine General
Dark Elven General
Direct Effect General
Direct Entry General
Developmental Evaluation General
Days of Emergence General
Destroyer Escort General
Dairy Equipment General
Dextrose Equivalent General
Dragon Enchanter General
Department of Employment Governmental
Direct Examination Governmental
Detroit Field Office Governmental
Division of Enforcement Governmental
Division of Epidemiology Governmental
Dixon Electronics Governmental
Domain Expert Jobs
Digital Employee Jobs
Differential Equation Maths
Discrete Exact Maths
Derailed Evolution Medical
Dilation and Evacuation Medical
Digestible Energy Medical
Dead Elephant Medical
Do Easy Messaging
Directed Energy Military and Defence
Data Element Military and Defence
Development Estimate Military and Defence
Display Entity Military and Defence
Damage Expectancy Military and Defence
Delay Equalizer Military and Defence
Drift Error Military and Defence
Dental Emergency Military and Defence
Dutch Elite Military and Defence
Discard Eligible Networking
Desktop Environment Networking
Dynamic Effort Physics Related
Discrete Event Physics Related
Discharge Electrode Physics Related
Dynamic Equivalence Physics Related
Driven Element Radio Science
Delaware Regional
DEutschland (Germany) Regional
DEutsch (German) Regional
Driver Events Softwares
Digital Extremes Softwares
Design Engineering Directorate Space Science
Doppler Extractor Space Science
Dynamics Explorer Space Science
Direct Elimination Sports
Doubles Event Sports
Discard Eligibility Telecommunication

Report

Posted on 23 Nov 2024, this text provides information on Miscellaneous in Chemistry related to Chemistry. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

Take Quiz To Earn Credits!

Turn Your Knowledge into Earnings.

tuteehub_quiz

Write Your Comments or Explanations to Help Others



webstory list tuteehub
Miscellaneous in Chemistry
webstory list tuteehub
General in Chemistry
webstory list tuteehub
Basic Chemistry in Chemistry
webstory list tuteehub
Elements Compounds and Mixtures in Chemistry
webstory list tuteehub
Chemical Bonding in Chemistry
webstory list tuteehub
Metals and Their Compounds in Chemistry
webstory list tuteehub
Reactions and Rate of Reaction in Chemistry
webstory list tuteehub
Non Metals and Their Compounds in Chemistry
webstory list tuteehub
Hydrocarbons and Its Derivatives in Chemistry
webstory list tuteehub
Electricity and Chemistry in Chemistry
webstory list tuteehub
Chemistry miscellaneous in Chemistry


Ever curious about what that abbreviation stands for? fullforms has got them all listed out for you to explore. Simply,Choose a subject/topic and get started on a self-paced learning journey in a world of fullforms.

open app imageOPEN APP