Rate of reaction in zero order , Chemistry

Why rate of reaction in zero order is independent of concentration?

Solution) Where r is the reaction rate and k is the reaction rate coefficient with units of time / concentration. If, and only if, this zeroth-order reaction

1) Occurs in a closed system,

2) There is no net build-up of intermediates, and

3) There are no other reactions occurring, it can be shown by solving a mass balance equation for the system that:

$r = -\frac{d[A]}{dt} = k$

A reaction is zero order if when concentration data is plotted versus time, the result is a straight line. The slope of this resulting line is the negative of the zero order rate constant k. The half-life of a reaction defines the time needed for half of the reactant to be depleted (similar as the half-life involved in nuclear decay, which is a first-order reaction). For a zero-order reaction the half-life is given by:

$t_{\frac{1}{2}} = \frac{[A]_0}{2k}$, where [A]

0 represents the initial concentration and k is the zero order rate constant.

Posted Date: 3/11/2013 12:31:25 AM | Location : United States







Related Discussions:- Rate of reaction in zero order , Assignment Help, Ask Question on Rate of reaction in zero order , Get Answer, Expert's Help, Rate of reaction in zero order Discussions

Write discussion on Rate of reaction in zero order
Your posts are moderated
Related Questions

explain how adsorption as a method of water treatment

What is water?

The specific heat of a substance is the amount of energy required to raise one gram of the material by one degree centigrade. But what happens if you get an ice cube too hot?  It i

1 gram of pure sodium carbonate is dissolved in water and the solution is made up to 50 ml of this solution 50 ml of 0.1 N HCl is added whose volume is 50 ml and the mixture furthe

what is symetrycal tribromo benzene

I want an Assignment about mechanism and techniques of polymerization

A tank containing 100 kg of a 60% brine (60% salt) is filled with a 10% salt solution at the rate of 10 kg/min and 78°F. Solution is removed from the tank at the rate of 15 kg/min.

examples of spd arrangement

Difference between mesomrism and resonance