What is the suggested KHC8H4O4 sample size for each titration?
0.9-1.1g
When the following chemical equation is balanced:
NaOH(aq) +
KHC8H4O4(aq) = __?(aq) +
__?(l)
the stoichiometric coefficient in front of the liquid
product is:
1
What percent difference are you looking for in your titration trials?
+/- 1
The purpose of this lab is to:
find the concentration of a sodium hydroxide solution
Which of the following is not mentioned in this experiment?
gas forming reaction
Accuracy is a measure of:
the agreement between actual value and that obtained from the experiment
The smallest division on a buret is?
0.1mL
If a 55mL sample of NaOH was found to contain 0.026 moles of NaOH, then the Molarity of this solution is?
0.47
The concentration of a solution is expressed as ________, in units of _________.
molarity, moles/L
When the experiment is complete you should:
discard the sodium hydroxide in the container provided in the fume hood.
Precision is a measure of:
how close each measurement is to one another.
Percent Difference is a measure of:
precision
The equivalence point is:
when enough reactant has been added to completely react with the other reactant present
What is the purpose of running a trial run?
to get a general idea where the equivalence point is.
The reaction between an acid and a base produces:
salt and water
The reagents that are required in this lab are:
NaOH and KHC8H4O4.
When diluting the concentrated NaOH solution the final volume of the dilute solution should be?
~200mL
In setting up the titration, the sodium hydroxide solution is placed
in the buret
The procedure calls for the addition of _________ phenolphthalein indicator to each flask.
3-4 drops