In: Chemistry
Determination of an Equilibrium Constant
1. What is meant by a reversible reaction?
2. True or False : The
numerical value of the equilibrium constant for
a given reaction only changes
if the temperature
changes.
3. Which component of the reaction mixture was it
that was titrated with
sodium hydroxide?
A. Acetic acid B. Isopropyl alcohol
C. Water D. Phenolphthalein
4. Why was it necessary to wrap your rubber stopper in plastic wrap?
5. Why was it necessary to titrate a blank sample
solution, that is, a sample
of distilled water which contain only sulfuric
acid?
6. List two advantages of using a buret for measuring
reaction volumes as
opposed to maybe a graduated cylinder. (Precision and accuracy are
not exceptable answers)
7. What is a catalyst and how and why was a catalyst
needed in this
experiment?
8. When would you want to use a pipet instead of a
buret in an experiment?
1. What is meant by a reversible reaction?
reversible reacitons are those theoretical reacitons that could be reversed
that is
reactants ---> products
and now products --> reactants
In real life, ther eis only partial reversible reactions
2. True or False :
The numerical value of the equilibrium constant
for a given reaction only changes if the temperature changes. Since
this is a CONSTANT and will not change with
concentrations/pressures. only with Temperatures
3. Which component of the reaction mixture was it
that was titrated with
sodium hydroxide?
A. Acetic acid B. Isopropyl alcohol
C. Water D. Phenolphthalein
Typically we titrate acids with bases; all other are compontents used to aid the titraitons
4. Why was it necessary to wrap your rubber stopper in plastic wrap?
To avoid gas leak
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