How to define fast reactions, Chemistry

Assignment Help:

Fast reactions are those reactions that occur instantaneously. A fast reaction depends upon the reaction rates. These reactions are so fast that they occur as soon as the reactants are bought together. Generally, these reactions involve ionic species and thus known as ionic reactions. These reactions take about 10-14 to 10-16 seconds for completion. It is very hard to determine the rates of these reactions. It is also defined as a reaction with a half-life of milliseconds or less; such reactions occur so rapidly that special experimental techniques are required to observe their rate. The rate of a reaction is defined in terms of the rates with which the products are formed and the reactants are consumed. For chemical systems it is usual to deal with the concentrations of substances, which is defined as the amount of substance per unit volume. The reaction rate can then be defined as the concentration of a substance that is consumed or produced in unit time. The half-life of a reactant is defined as the time that it takes for half of the initial amount to undergo reaction. The half-life is independent of the initial amount.  The disadvantage of fast reactions is that the time that it takes to mix reactants or to change the temperature of the system may be significant in comparison with the half-life so that the initial time cannot be measured accurately and the other is that the time it takes to measure the amounts of substances may be comparable with the half-life of the reaction.


Related Discussions:- How to define fast reactions

Model of nucleus, ordering in arrangement of protons and neutrons in nucle...

ordering in arrangement of protons and neutrons in nucleus

Enthalpy, calculate the enthalpy of combustion for acetic acid using standa...

calculate the enthalpy of combustion for acetic acid using standard enthalpies of formation.

Various steps required for making water suitable , Q.   Name the various st...

Q.   Name the various steps required for making water suitable for domestic use. Ans. Treatment process for domestic use S . No . Process use for tr

Evlaute the percent error, Q. Evlaute the Percent Error? Juan computed ...

Q. Evlaute the Percent Error? Juan computed the density of aluminium three times. Trial 1: 2.74 g/cm 3 Trial 2: 2.68 g/cm 3 Trial 3: 2.84 g/cm 3 Aluminium has a

Metallic acetates - acetic acid, Metallic Acetates - Acetic Acid For ma...

Metallic Acetates - Acetic Acid For making several useful metallic acetates, illustrated as: (1) Basic copper acetate that is used for making green paints. (2) Al, Fe and

Hybridisation, predict the period number and group number of element with a...

predict the period number and group number of element with atomic number 12

Organic chemistry, what type of reaction takes place in synthesis of iodofo...

what type of reaction takes place in synthesis of iodoform from acetone by haloform reaction?

Electrolysis process, working of electrolysis process? components of electr...

working of electrolysis process? components of electrolysis process? advantages and disadvantages of electrolysis process?

How do you determine the oxidizing or reducing agent, Q. How do you determi...

Q. How do you determine the oxidizing or reducing agent? Ans. A substance that oxidizes another substance is called an oxidizing agent. One that reduces another substance

Radioactivity, what is the principal of radiometric titration

what is the principal of radiometric titration

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