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Acids & Bases Project
Transcript of Acids & Bases Project
Categorizing Acids & Bases
2 Interesting Facts
Acids are sour tasting substances that turn litmus paper red and has a pH of 6.9 or less.
Some characteristics are the sour taste, turns litmus paper red, has a greater concentration of [H+] than [OH-], pH less than 6.9.
A strong acid has a pH around 0-2 and has an extremely larger concentration of [H+] than [OH-].
Some examples include lemons, sodas, HC2H3O2 (Acetic Acid).
The neutralization reaction of an acid with a base will always produce water and a salt. If we were to mix an acid and base together, the H+ ion would combine with the OH- ion to make H2O, or plain water.
HCl + NaOH ---> H2O + NaCl
HBr + KOH ---> H2O + KBr
Bases are bitter tasting substances that turn litmus paper blue and has a pH of 7.1 or more. Can be hazardous if consumed.
Some characteristics are the bitter taste, turns litmus paper blue, has a greater concentration of [OH-] than [H+], pH greater than 7.1.
A strong base has a pH around 12-14 and has an extremely larger concentration of [OH-] than [H+].
Some examples of bases are soaps, baking soda, and C3H6O (Acetone)
Arrhenius Acids: Hydrogen-containing that ionize to give H+
Arrhenius Bases: This ionizes to give off the OH-
Bronsted-Lowry Acids: This is the hydrogen-ion donor
Bronsted-Lowry Bases: This is the hydrogen-ion acceptor
Lewis Acids: Substance that can accept a pair of electrons (e-) to form a covalent bond
Lewis Bases: Substance that can donate a pair of electrons (e-) to form a covalent bond
There are acids actually in milk! The acid which is found in milk I called lactic acid. This acid is used to form yogurt.
Bases are actually way more dangerous if consumed! You can really only consume to the pH of around 8-9, while with acids you can consume up to a pH of 2.3.
You can use the pH scale on the previous slide to see different kinds of acids and bases.
Strong Acids can be from a pH of about 1-0.
Some examples of these are: Stomach acid and Battery Acid
Strong Bases can be from a pH of about 13-14.
Some examples of these are: Bleaches and Liquid drain cleaner and oven cleaner.
By, Tyler & Logan
Acids & Bases Project
Acids and Bases concentration is measured in pH but has to be converted from molarity.
To find the pH of a substance given [H+], you will use the formula pH=-log([H+]
So, if [H+]=1.0x10^-7 what is the pH of that substance.
Now, insert the [H+] into your given formula.
Your pH of this substance is 7, which if you check the chart is pure water.
This shows which pH number changes the the color of the litmus paper