Dissociation of Water Molecules

Part A

What name is given to this molecule?

Correct

A water molecule that gains a hydrogen becomes a hydronium ion.

Part B

How did this molecule form?

	A water molecule gained an hydrogen ion from another water molecule.
	Two water molecules bonded.
	A water molecule split in half.
	A hydrogen molecule bonded with an OH^– molecule.
	Evaporation.

Correct

This molecule was formed by the transfer of a hydrogen ion from one water molecule to another.

Part C

What name is given to this molecule?

Correct

A water molecule that loses a hydrogen ion is referred to as a hydroxide ion.

Part D

This animation illustrates the _____ of water.

To view the animation, click here. Then click on the image to start the animation.

Correct

The transfer of a hydrogen atom from one water molecule to another is referred to as dissociation.

Part E

Which of these is the correct equation for the dissociation of water?

Correct

This is the correct equation for the dissociation of water molecules.

Part F

What is the charge on a hydronium ion?

Correct

The formation of hydronium results in the gain of 1 more proton than electron.

Part G

What is the charge on a hydroxide ion?

Correct

A hydroxide ion is formed when a water molecule loses a hydrogen ion.

Part H

About _____ molecules in a glass of water are dissociated.

Correct

One in half a billion.

Think!