pH & Ocean Acidification

Identify the correct statement

• pH measures ONLY the amount of H+ ions in a solution.

• pH measures ONLY the amount of OH- ions in a solution.

• pH measures BOTH the amount of H+ & OH- ions in a solution.

• All are correct

Solvent is..... & solute is....

• the molecules dissolved, the liquid

• the liquid, the molecules dissolved

• Both are correct

• None are correct

An ACIDIC solution has...

• More H+ ions and less OH- ions.

• Less H+ ions and more OH- ions.

• Equal amount of H+ and OH- ions.

• None are correct.

When the pH of the ocean .... Ocean Acidification ...

• increases, increases

• increases, decreases

• decreases, increases

• decreases, decreases

The ARROWS in the diagram represent

• the direction of the chemical reactions

• reversible reactions

• Both are correct

• None are correct

When temperature .... the amount of CO2 absorbed in solvents ...

• increases, increases

• increases, decreases

• Both are correct

• None are correct

A BASIC solution...

• is any solution with a pH of more than 7.

• includes solutions such as chlorox, drain cleaner and ammonia.

• has more OH- ions than H+ ions.

• All are correct

NEUTRAL solutions...

• have an equal amount of H+ and OH- ions.

• have a pH of 7.

• include pure/distilled water.

• All are correct

Refer to the diagram. Identify the STEPS that show where the ocean is becoming more acidic.

• Step 1 & 2

• Step 2 & 3

• Step 3 & 4

• Step 4 & 5

Refer to the diagram. Identify the step that represents the carbonated soda being added to the salt/ocean water & the color the solution turned in the presence of CO2.

• Step 1, blue/green

• Step 2, yellow

• Step 1, yellow

• Step 2, blue/green