What is meant by extent of a reaction?
In physical chemistry and chemical engineering, extent of reaction is a quantity that measures the extent to which the reaction has proceeded. Often, it refers specifically to the value of the extent of reaction when equilibrium has been reached. It is usually denoted by the Greek letter ξ.
What is the difference between extent of reaction and rate of reaction?
Extent of reaction means to what amount the reactant has been converted into the product or whether the reaction is completed or not. Rate of reaction is the speed at which the reaction is completed or the velocity of the reaction.
What is extent of reaction in polymerization?
We learned about degree of polymerization in Lesson 2, but what is extent of reaction? If we assume equal amounts of mutually reactive groups (e.g., A and B groups), then we can define the extent of reaction (p) as. p=#functional groups reacted#functional groups initially.
How do you find the extent of a reaction at equilibrium?
We can use the concentration of each reactant and product at equilibrium to calculate the equilibrium constant, Kc, for this reaction under these conditions:
- Write the equilibrium constant expression: Kc = [Z(g)] [X(g)][Y(g)]
- Substitute in the values: Kc = 0.01. 0.99 × 0.99.
Does the extent of reaction change with time?
The rate or speed of a reaction can measure how much product is being formed in a specific time. The rate of a reaction can change as a result of changes in temperature, concentration, pressure and the presence of catalysts.
How is KC used to predict the extent of reaction?
Value of Kc is also used to predict the extent to which a reaction occurs. To predict the direction of reaction: The value of Kc is helpful in determining the direction in which a reaction will shift in order to achieve the equilibrium. First we determined the ratio of initial concentrations of reactants and products.
What is the fractional conversion?
Fractional conversion is defined as the number of moles of a compound that reacted divided by the amount of the moles that were fed.
What is extent of reaction and equilibrium constant?
The larger the value of the equilibrium constant, K, the greater the extent of the forward reaction. The smaller the value of the equilibrium constant, K, the greater the extent of the reverse reaction.
What is Singlepass conversion?
Single-Pass Conversion = reactant input to reactor – reactant output from reactor. reactant input to reactor. ×100%
What is the relationship between KP and KC?
Kp is the equilibrium constant determined from the partial pressures of the equation of a reaction. Kc is the equilibrium constant, which depicts the ratio of the equilibrium concentrations of products over the concentrations of reactants. Generally, the relation between Kp and Kc can be represented as: Kp = Kc (RT)
What is the extent of a reaction?
In other words, it is the amount of substance that is being changed in an equilibrium reaction. Considering finite changes instead of infinitesimal changes, one can write the equation for the extent of a reaction as. The extent of a reaction is defined as zero at the beginning of the reaction.
What is the extent of reaction in fractional conversion?
The extent of reaction is a quantity used to determine how much a reactant reacted. Fractional conversion = moles reacted/moles fed You are commenting using your WordPress.com account. ( Log Out / Change ) You are commenting using your Google account. ( Log Out / Change ) You are commenting using your Twitter account.
How do you predict the extent of a reaction?
The extent of a reaction can be predicted by using thermodynamics. The two main laws of themodynamics, called the first and second laws, tells us that energy is conserved and that disorder increases. Both of these laws are relatively easy to relate to.
Can the extent of a reaction be negative?
To do this recall that the extent is always positive, and needs to “work” with all the component balances — values which lead to negative amounts can be tossed. General Formulation of Extents of Reaction