Overall, the purpose of this experiment was to
observe what occurs when you mixed a cation solution with an anion solution. By
mixing the Potassium Chromatin and the Lead Nitrate solution together it created
a new solution (2 KNO3 + PbCrO4). This new solution appeared yellow and had black
dots throughout it.
+ K2CrO4 –à 2KNO3 +PbCrO4
I mixed the Lead Nitrate and Potassium Chromatin together it created a yellow precipitate.
The chemical reaction became a new balanced
chemical reaction. Below is an example:
begin with, I was able to figure out which solution was a cation and which
solution was an anion. A cation is a positively charged ion. A cation has fewer
electrons than protons. An anion is a negatively charged ion. An Anion has more
electrons than protons. In this experiment, Potassium is the cation and Nitrogen
is the anion.
also observed that the yellow precipitate had black dots throughout it.
of filtered precipitate: 16.160g.
appearance of precipitate (did it exhibit any color?): The precipitate was
In this experiment, I
first added 50 ml(s) of Potassium Chromate solution into a 100ml beaker. Then,
I added 50 ml(s) of Lead (II) Nitrate into the same 100ml beaker. Then, I
filtered the resulting precipitate into a 250ml Erlenmeyer Flask with a Buchner
Funnel. I lastly, weighed and recorded the data. I weighed the precipitate by removing
Buchner Funnel and placing resulting precipitate into a test tube. The data I
recorded included the weight, color, and other observations of the precipitate.
major finding while conducting this experiment was that the anion and cation
created a precipitate that was yellow.
A brief summary of the experiment would be, that I started off by
mixing the Potassium Chromate solution with the Lead Nitrate solution together.
I than filtered the solution and observed the precipitate. I than weighed the
precipitate and recorded the data and all other observations.
Purpose of this experiment was to observe if there was a reaction between a
cation and an anion. If a reaction occurred, we had to observe the precipitate.
The chemicals that was used in the experiment was a Lead Nitrate solution,
Pb(NO3)2, and it was mixed with a solution of Potassium Chromate,
AND ANION LAB