Post on 13-Apr-2017
ACIDS AND BASES
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When a salt, acid, or base is dissolved in water it splits apart
or _________ .
DISSOCIATES
Resists changes in pH.
buffer
What is the pH of lakes normally
7ish
What is the pH of lemons
3ish
HCl is a ______ acid.
Binary or Monoprotic or strong
H2SO4 is a ______, _______ ACID
ALL acids have ___ in them.
H+ ions
H+ ions are really just _____________
1% dissociation is a_________ acid or base.
WEAK
100% dissociation is a ________ acid or base.
STRONG
Vinegar dissociates very little in water solutions. It is a _______
acid.
WEAK
[ ] brackets like this mean…
Concentration in M (moles/liter) molarity
0.001M HCl = pH of _____
3
0.01M HCl = pH of _____
2
0.00001M HCl = pH of _____
5
0.1M HCl = pH of _____
1
0.1M NaOH = pH of _____
13
0.01M NaOH = pH of _____
12
0.001M NaOH = pH of _____
11
The HCO3 -1 ion can act either as an _____ or a ______.Acid base
H30+
THE REAL WAY ACIDS EXIST IN
SOLUTION IS NOT H+ it is ….
H30+
What’s my name?
Why do always say pH and [H+] if its really
hydronium then????
Used to cure heart burn.
Antacid (or unclebase)
Scale from 0-14 used to measure acidity or basicity.
pH scale
When acid and base react together we call it a _________
reaction.
neutralization
If an ACID dissociates 100% in solution it is a _____ acid.
STRONG
If a base does not fully dissociate (say only 3%) it is a _____ base.
WEAK
Vinegar’s scientific name.
Acetic acidHC2H3O2
A little bit of HCl in LOTSA water is a ____________ solution.
dilute
12M HCl is a __________ solution. (lotsa acid in not much
water)
concentrated
Acid base vocab
This is a ___________
Experiment.
TITRATION
A solution with a known concentration is a __________
solution.
STANDARD
Phenolphthalein is an ______indicator
Colorful acid/base indicator ____ _______ ______
Red cabbage juice
What is important about the endpoint?
Moles of Acid = __________moles of base
Procedure used to find the concentration of an unknown.
titration
Tall slender piece of glassware with a valve, used to deliver precise quantities of
acid or base in a titration..
buret
The point in a titration when the indicator changes color.
endpoint
Name the buffer of the human bloodstream.
HCO3- (bicarbonate)
What is the pH of human blood.
7.25-7.35
How does your body get rid of lactic acid at the end of strenuous
exercise?
You exhale CO2AND water.
Name two chemicals used in common antacids.
Calcium carbonateAluminum hydroxide
Magnesium hydroxideSodium bicarbonate
Name the SIX strong acids.
HClHBrHNO3
HIH2SO4
HClO4
What do these SIX strong acids do when you put them in water?
HClHBrHNO3
HIH2SO4
HClO4
What do these SIX strong acids do when you put them in water?
HClHBrHNO3 H+ + NO3
-
HIH2SO4
HClO4