Acids, Bases, and pH

Part A

What is the arrow pointing to?

	electron
	water molecule
	hydroxide ion
	hydrogen ion
	hydronium ion

Correct

The arrow is indicating a single proton, a hydrogen ion (H⁺).

Part B

What is the arrow pointing to?

	hydrogen ion
	hydronium ion
	proton
	hydroxide ion
	water

Correct

The arrow is indicating a hydroxide ion (OH^-).

Part C

In a neutral solution the concentration of _____.

	water molecules is less than the concentration of hydrogen ions
	hydrogen ions is less than the concentration of hydroxide ions
	hydrogen ions is greater than the concentration of hydroxide ions
	hydrogen ions is equal to the concentration of hydroxide ions
	water molecules is less than the concentration of hydroxide ions

Correct

This is the definition of a neutral solution.

Part D

How does the pH of the solution on the right compare with that of the solution on the left?

	Both of these solutions are equally basic.
	Both of these solutions are equally acidic.
	The solution on the right is basic relative to the solution on the left.
	The solution on the right is neutral relative to the solution on the left.
	The solution on the right is acidic relative to the solution on the left.

Correct

The solution on the right has a lower concentration of hydrogen ions relative to hydroxide ions than does the solution on the left.