Acid-Base Equilibrium Concepts

The video tutorial covers two examples of predicting Brønsted-Lowry acid-base equilibrium. The first example involves hydrogen sulfate and hydrogen carbonate ions, where the acid and base are identified, and the equilibrium favors the products. The second example, without given products, involves hydrogen phosphate and hydrogen oxalate ions. The stronger acid and base are determined using an acid-base table, and the equilibrium direction is predicted. The tutorial emphasizes identifying acids and bases, executing proton transfers, and predicting equilibrium directions.

What is the first step in analyzing a Bronsted-Lowry acid-base equilibrium?

• Calculate the pH

• Determine the acid and base

• Balance the chemical equation

• Identify the products

In the reaction between hydrogen sulfate and hydrogen carbonate ions, which ion acts as the acid?

• Hydrogen sulfate ion

• Hydrogen carbonate ion

• Carbonic acid

• Sulfate ion

How do you determine which chemical is the base in a reaction?

• By its color

• By its solubility

• By its position in the acid-base table

• By its molecular weight

What is unique about hydrogen phosphate and hydrogen oxalate ions in acid-base reactions?

• They are always acids

• They do not participate in reactions

• They can act as both acids and bases

• They are always bases

Which ion is the stronger acid: hydrogen phosphate or hydrogen oxalate?

• Hydrogen oxalate

• Hydrogen phosphate

• Neither is an acid

• Both are equally strong

What determines the direction of an acid-base equilibrium?

• The presence of a catalyst

• The temperature of the reaction

• The relative strength of the acid and base

• The concentration of reactants

In the context of acid-base reactions, what does it mean if the acid is higher on the table than the base?

• The reaction is endothermic

• The products are favored

• The reaction is exothermic

• The reactants are favored

What should you do if the reactants are not given in an acid-base reaction?

• Guess the reactants

• Use the acid-base table to identify possible reactants

• Ignore the reaction

• Use a different chemical equation

What is the role of the acid-base table in predicting reaction outcomes?

• It shows the color changes of indicators

• It lists the pH of solutions

• It helps identify the stronger acid or base

• It provides the molecular weight of compounds

What is the final step in completing an acid-base reaction?

• Balancing the equation

• Identifying the products

• Executing the proton transfer

• Measuring the pH