IPS Quiz

4.9-Acidification Lab

ocean acidification

normal ocean ph is 8.1-8.4

oceans ph has decreased 0.1

lower ocean ph means sea animals with shells will not be able to make a shell

acidification 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 with straw

b/c the carbonic acid lowers ph and dissolves calcium faster


Sulfuric acid Notes:

discovered in 8th century by alchemists --> alchemy--> chemistry

uses: lead acid batteries (cars), fertilizers, steel industry--> prevents rust corrosion, dried fruit production (hydrotropic)

Limestones/Sinkholes:

limestone: porous (holds water)

soft

soluble in h20 (carbonic acid)

FL sinkholes occur b/c: lots of limestone, water underground (aquafer), once covered with ocean-->soft calcium deposits (dead animals

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