The first purpose of this lab was to determine the limiting reagent and percent yield of a
reaction. The second purpose was to identify compounds from one another by their chemical reactivity
and physical properties through a series of tests.
In the first part of this experiment, a reaction between sodium carbonate and copper chloride
will be examined, this reaction is:
(aq) + CuCl
(aq) → 2 NaCl (aq) + CuCO
Equal masses of sodium carbonate and copper chloride will be reacted to form the product, copper
Then, by weighing the final product, the theoretical yield, actual product yield, percent yield,
and limiting reagent can be identified for this specific reaction.
Finding theoretical yield shows the
maximum possible amount of product that can be formed.
However, most of the time the actual yield, or
the amount of product actually obtained from a reaction, varies from the theoretical yield.
This can be due
to temperature, pressure, or not recovering all of the product- to name a few.
The percent yield shows how
efficient the given reaction is, and the limiting reagent determines the amount of product that can be formed
because it is the first to be used up by a reaction (Chemistry p. 106).
In the second part of this experiment, the characteristics of five white compounds, BaCO
, and NaCl will be tested.
These compounds' solubility, solution pH, and
chemical reactivity [with HNO
, the sulfate ion (SO
), and the silver ion (Ag
)] will be tested.
purpose of these tests is to determine what physical and chemical properties can be attributed to each
Physical properties can be observed without changing the identity of the
compound, this includes traits such as water turning into ice then melting back into it's liquid state.