4.9 to Acidification lab

Characteristics of Limestone:

-Pores

-hold H20 together

-Soft


-Soluble in H20 (Carbonic Acid)

Why do Sinkholes occur in Florida:

Lots of Limestone

-Water underground (aquifer)

-once covered with ocean ->

-Soft Calcium deposits (dead animals)


Characteristics of Ocean Acidification:

Ocean Ph is around 18.1-18.4

Ocean's Ph has decreased 0.1

Lower ocean Ph means sea animals w shells will not be able to make a shell


Sulfuric Acid Notes:

Discovered in 8th century by alchemist (Alchemy)

Lead into gold

Chemistry

Acid is used for:

Lead acid batteries

Fertilizers

Steel industry (prevents rust corrosion)

Dried fruit production (Hydrotropic)


Magnesium Carbonate Acid

CO2 dense gas --> sinks


Downward Tube:

-Filled w air and gas escapes

Magnesium and Acid

Hydrogen (H) ; light gas (rises)

Upright Tube:

-Filled w air and gas escapes

Downward Tube:

-Filled with hydrogen and gas cannot escape


Upright Tube:

-Filled w CO2 and gas cannot escape


Hear pop!

-Gas is ignited and rushes out of test tube and it rubs against glass which causes friction


Downward Test Tub

Flammable gas escapes


Acidification Notes Post Lab:

-Phenol red changes color as you add CO2 into H20

-The CO2 turns to carbonic acid lowering the Ph of the H20

-Calcium tablet is more soluble in cup w straw

-Because the Carbonic acid lower the Ph and dissolves calcium faster


Characteristics of Ocean Acidification:

Ocean Ph is around 18.1-18.4

Ocean's Ph has decreased 0.1

Lower ocean Ph means sea animals w shells will not be able to make a shell