pH scale

What is the main difference between strong acids and weak acids?

Strong acids completely ionize in water, while weak acids only partially ionize.

What happens to strong acids when they dissolve in water?

They completely dissociate to release H+ ions.

Give an example of a strong acid.

Hydrochloric acid (HCl)

What is an example of a weak acid?

Ethanoic acid (CH3COOH)

What is the ionization of weak acids characterized by?

It is a reversible reaction, establishing an equilibrium between undissociated and dissociated acid.

How does the concentration of H+ ions affect the rate of reaction of acids?

The higher the concentration of H+ ions, the faster the rate of reaction.

What is pH a measure of?

The concentration of hydrogen ions (H+) in a solution.

How does a decrease of 1 on the pH scale affect H+ ion concentration?

It increases the concentration of H+ ions by a factor of 10.

What is the pH of a strong acid compared to a weak acid at the same concentration?

The pH of a strong acid is always less than that of a weak acid.

What is the difference between concentration and strength of an acid?

Concentration refers to the amount of acid in a volume of solvent, while strength refers to the degree of ionization.

Can a strong acid be dilute?

Yes, it is possible to have a dilute solution of a strong acid.

What happens when an acid reacts with a metal oxide?

It produces a salt and water.

What is the general reaction for an acid reacting with a metal hydroxide?

Acid + Metal Hydroxide → Salt + Water

What do metal carbonates produce when they react with acids?

They produce a salt, water, and carbon dioxide.

What is the method to make a soluble salt from an insoluble base?

Add the insoluble base to the acid until no more reacts, filter out the excess, and evaporate the solution to crystallize the salt.

What type of salt is formed when hydrochloric acid reacts with a metal?

Metal chloride salt.

What type of salt is formed when sulfuric acid reacts with a metal?

Metal sulfate salt.

What type of salt is formed when nitric acid reacts with a metal?

Metal nitrate salt.

What does the pH scale indicate about a solution?

It indicates whether a solution is acidic (pH < 7), neutral (pH = 7), or basic (pH > 7).

What is the significance of the universal indicator?

It changes color to indicate the pH level of a solution.

What is the relationship between pH and H+ ion concentration?

A lower pH indicates a higher concentration of H+ ions.

What is the formula for calculating the change in H+ ion concentration based on pH change?

Factor H+ ion concentration changes by = 10^(-X), where X is the difference in pH.

What is the pH of a solution with a H+ concentration 100 times greater than that of a pH 5 solution?

The pH would be 3.

What happens to the pH of a solution if the concentration of an acid is increased?

The pH will decrease.

What is the characteristic of a strong acid in terms of dissociation?

A strong acid dissociates completely in solution.

What is the pH range for strong acids?

Strong acids typically have a pH less than 3.

What is the pH range for weak acids?

Weak acids typically have a pH greater than 3.