Equilibrium, prediction position acid-base reactions

How to Predict the Position of Equilibrium of an Acid-Base Reaction... 

Predict the position of equilibrium for each acid-base reaction that is, does each lie considerably to the left, does each lie considerably to the right, or are the concentrations evenly balanced (See Examples 8.4,8.12)... 

Predict the position of equilibrium for this acid-base reaction ... 

Look at the table on p. 691 and notice how it looks just like the "children-with-ice-cream" table. We can use this table to make predictions about equilibrium position in acid-base reactions just as we did for the children with ice cream. 

Complete this acid-base reaction. Use curved arrows to show the redistribution of electrons in the reaction. In addition, predict whether the position of this equilibrium lies toward the left or the right. 

Write balanced equations for the following reactions. If the reaction is an acid-base reaction, predict its position of equilibrium. 

Use the approach we developed in Section 2.4 to predict the position of equilibrium in acid-base reactions. Equilibrium favors reaction of the stronger acid and stronger base to form the weaker acid and the weaker base. It is helpful to remember that even though ammonium ions are positively charged, they are much weaker acids than carboxylic acids. 

Complete the following acid-base reactions and predict the position of equilibrium for each. Justify your prediction by citing values of pKg for the stronger and weaker acid in each equilibrium. For values... 

Using the chart of values, we can also predict the position of equiUbrium for any acid-base reaction. The equilibrium will always favor formation of the weaker acid (higher pA j value). For example, consider the following acid-base reaction ... 

In this section, we will learn to predict the position of equilibrium just by comparing conjugate bases without using pA values. To see how this works, let s examine a generic acid-base reaction ... 

Draw the products of each of the following acid-base reactions, and then predict the position of equilibrium in each case ... 

Many organic reactions occur by one or more steps in which a proton is added to a basic site or is removed from an acidic site. It turns out that we can predict the position of an acid-base reaction from the pAf values of the two acids that participate in the proton transfer steps. The equilibrium constant for the general equilibrium between two acids, HA and HB, is given by the ratio of the acid dissociation constants,... 

We use Figure 18.8 to predict the net direction of a reaction between any two pairs, that is, whether the equilibrium position lies to the right (K > 1) or to the left (K < 1). A reaction proceeds to the right if an acid reacts with a base lower on the list because this combination produces a weaker conjugate base and a weaker conjugate acid. Here are two sample problems that demonstrate this key idea. 

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