ACIDS
BASES
pH and pOH
TITRATIONS
INDICATORS
100
First useful definition of acids and bases.
What is the Arrhenius definition
100
When dipped into a base, litmus paper turns this colour.
What is blue?
100

Given a pH=9.35, the [OH-] is...

What is 2.2 X 10-5 M?


10-(14-9.35)= 10-4.65=2.2X10-5 M

100
This chemical changes colour at the endpoint of a titration.
What is an indicator?
100
Acid-base indicators change colour when this changes in a solution.
What is acidity?
200
Acids do this in water.
What is ionize?
200
Bases do this in water.
What is dissociation?
200

The square root of this constant (1.0 X 10-14 ) gives the concentration of hydronium and hydroxide ions in solution at STP.

What is the equilibrium or ionization constant for water at STP?
200

When moles of H3O+ = moles of OH- in a titration.

What is the equivalence point?
200

Having tested an unknown solutions with the following indicators the following was found:

Phenol red            yellow

methyl orange      yellow

phenolphthalein    clear

methyl red           red

This is the pH range of the solution.

What is 4.4 to 4.8?
300
One molecule of non-metallic oxides reacts with this many molecules of water.
What is two?
300
These bases react <50% with water.
What is a weak base?
300
This formula is used to calculate the pH of a strong acid.

What is pH = -log[H3O+]?

300
This piece of equipment holds the titrant in a titration.
What is a buret?
300
Indicators can come from nature or they can be man made.  They are usually made from this compound.
What are weak organic acids?
400
Acids produce this ion on reaction with water.

What is hydronium (H3O+)?


400

Ionic compounds that dissociate 100% in water to produce OH-.

What is a strong base?
400
This number represents the pOH of a solution when 6.25 grams of HCl are dissolved in 500. mL of water. 
What is 13.535?
400
A way to graphically show the progress of a reaction.
What is a titration curve?
400
These are the generic symbols for any indicator, both un-ionized and ionized.

What is HIn and In-?

500
An acid that has low conductivity and ionizes incompletely in water.
What is a weak acid?
500

These chemicals react with water more than once to produce more than one OH-.

What is a polyprotic base?
500

The pH of 0.2M Ba(OH)2(aq), assuming it is soluble.

What is 13.6?
500

Volume of 0.5 M H2C2O4 required to titrate 10.0 mL of 0.12 M NaOH.


DAILY DOUBLE

What is 1.2 mL?
500
This is the concentration range of NaOH determined from the following data:

phenolphthalein               pink

1,3,5 trinitrobenzene       colourless

Indigo carmine                green

DAILY DOUBLE

What is 0.003 M to 0.01 M?
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