Unit 9 Acids and Bases Test

The strength of an acid or base is dependent upon…

• how high its pH is.

• how toxic it is.

• how completely it dissociates or ionizes.

• how stable it is.

A solution with a pH of 8 would be classified as a ________.

• strong acid

• strong base

• weak acid

• weak base

Which of the following is not true of a neutralization reaction?

• It is a type of single replacement reaction involving an acid and a base.

• The neutralization of a strong acid and a strong base will have a pH equal to 7.

• It is a type of double replacement reaction that always produces water.

• It results in a salt made from the reactants’ ions.

Substance A was placed in water. Figure #1 shows the particle diagram of the resulting solution. Substance A is most likely a ____________.

• strong acid

• strong base

• weak acid

• weak base

Which of the following terms best describes this solution?

• 100% dissociation

• Partial dissociation

• 100% ionization

• Partial ionization

Tags

NGSS.HS-PS1-4

An acidic solution has…

• a pH less than 7.

• more hydronium ions than hydroxide ions.

• a pOH greater than 7.

• All are true.

If the pH of a solution increases from 5.0 to 6.0, what has happened to the hydronium ion concentration?

• It has gone up.

• It has gone down.

• It has been neutralized.

• It’s unaffected.

Which of the following definitions cannot be used to define an acid?

• A substance with a low pH.

• A substance that accepts protons.

• A substance that increases the concentration of hydronium ions in an aqueous solution.

A neutral solution has…

• equal concentrations of hydronium and hydroxide ions.

• a pH of 7.

• a pOH of 7.

• All are true

As the hydroxide ion concentration increases in a solution, the solution…

• becomes more acidic

• becomes more basic

• becomes weaker

• is unaffected.