Exploring Acids and Bases

What are three common properties of acids?

• They do not react with bases

• Three common properties of acids are: they taste sour, they conduct electricity, and they react with bases.

• They taste sweet

• They do not conduct electricity

How do bases typically feel to the touch?

• Sticky and tacky

• Slippery or soapy

• Rough and gritty

• Warm and fuzzy

What is the pH range for acidic solutions?

• 7 to 14

• 0 to 3

• 4 to 6.9

• 0 to 6.9

How do you calculate the pH of a solution?

• pH = -log[H+]

• pH = 7 - log[H+]

• pH = log[H+]

• pH = [H+] / 10

What happens during a neutralization reaction?

• An acid and a base react to form water and a salt.

• A base and a salt react to form an acid and water.

• An acid and a metal react to form hydrogen gas.

• An acid decomposes into its elements during the reaction.

What is the difference between a strong acid and a weak acid?

• Strong acids fully dissociate in solution; weak acids partially dissociate.

• Weak acids have a higher pH than strong acids.

• Strong acids are always more concentrated than weak acids.

• Strong acids are less corrosive than weak acids.

Give an example of a strong acid and a weak acid.

• Strong acid: Sulfuric acid (H2SO4), Weak acid: Nitric acid (HNO3)

• Strong acid: Hydrochloric acid (HCl), Weak acid: Acetic acid (CH3COOH)

• Strong acid: Phosphoric acid (H3PO4), Weak acid: Carbonic acid (H2CO3)

• Strong acid: Hydrofluoric acid (HF), Weak acid: Citric acid (C6H8O7)

What is the role of an indicator in acid-base titration?

• To increase the acidity of the solution

• To measure the pH of the solution

• To dilute the titrant before use

• The role of an indicator in acid-base titration is to signal the endpoint of the titration by changing color.

Describe the process of titration in detail.

• Titration is a method to determine the concentration of a solution by adding a titrant to a known volume of analyte until the reaction reaches completion, indicated by a color change.

• Titration is a method to separate solid from liquid using filtration.

• Titration is used to measure temperature changes in a solution.

• Titration involves mixing two solutions without any indicators.

What is the endpoint in a titration?

• The endpoint is when the solution changes color permanently.

• The endpoint is the initial point of the titration.

• The endpoint in a titration is the point at which the reaction is complete.

• The endpoint is the maximum volume of titrant added.