# Guide The Law of Mass Action

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## The Law of Mass Action

Snapshot 1: when is large, the reactants and are almost completely converted into product. Snapshot 2: conversely, for small , pure will almost entirely convert to and. Snapshot 3: adding more to the reaction mixture will shift the equilibrium toward higher concentrations of and. The Law of Mass Action.

Download free CDF Player. Details Snapshot 1: when is large, the reactants and are almost completely converted into product Snapshot 2: conversely, for small , pure will almost entirely convert to and Snapshot 3: adding more to the reaction mixture will shift the equilibrium toward higher concentrations of and.

The quantitative aspects of equilibrium are explored thoroughly through discussions of the law of mass action as well as the relationship between equilibrium constants with respect to concentrations and pressures of substances. Much of the discussion explores how to solve problems to find either the value of the equilibrium constant or the concentrations of substances at equilibrium. ICE initial-change-equilibrium tables are introduced as a problem-solving tool and multiple examples of their use are included.

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From the lesson. The value of the equilibrium constant remains constant at given temperature and pressure irrespective of the concentration of the reactants and products. The value of equilibrium constant depends on the nature and temperature of the reaction but it remains unaffected in the presence or absence of catalyst.

## Law of mass action - Wikiwand

It gives information about the reaction proceeding in a particular direction at a given temperature. From the above discussion, it can be seen that it is essential to determine the molar concentration of the reactants and products in order to determine the equilibrium constant.

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Here is an example for the calculation of molar concentration. Let x be the number of moles of the reactants that have reacted at the point of equilibrium. Now, the above reaction can be given as follows:.

## 2.02 Law of Mass Action

Solved problems Law of mass action is stated by Ans: Guldberg and Waage The rate at which a substance reacts is proportional to Active mass of the substance Product of number of moles of the reactants Total number of moles of the reactants and products None Answer: a Rate of forward and backward reaction are given by the constants K b and K f K f and K b K and K c Any of the above Answer: b Which of the following is true The rate of chemical reaction remains constant at constant temperature the value of the chemical equilibrium constant remains constant irrespective of the presence of the catalyst Molar concentration of a substance can be obtained by dividing the number of moles by total volume in liters.

All Answer: d Information about the reaction proceeding in a particular direction is given by Ans: equilibrium constant K. We have the best tutors in Finance in the industry.

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