Cation Test Lab Report
In order to determine the acidity of certain substances, we used moist and dry pH paper (litmus tests), and observed the results.
First we used dry pH paper to test the acidity of household ammonia, and it turned yellow. According to the legend, this indicates a weak acid. This is, however, not accurate as the vapor of the household ammonia wasn’t able to react as strongly with the pH paper since it was dry.
Then, we used moist DI water pH paper with the same substance, household ammonia, and it almost immediately turned a green/blue color. This according to the legend indicates a definite base.
For bleach, our prediction was that it would be a base. When we held our dry pH paper over it, nothing much happened except a little corner of the litmus paper turned dark blue. This led us to assume that it is a base.
Moist pH paper was used to test the ammonium carbonate as they were smelling salts. The paper turned the same blue/green color, indicating that ammonium carbonate is also a base.
Most stains are acidic, and therefore it would be logical and favorable to have cleaning products that would be on the base side of the pH scale. …show more content…
Sucrose had the lowest conductivity at -3 μS/cm but since we were measuring in the thousands, and DI water had the second lowest conductivity of 0 μS/cm, I would say they both have a very low and similar conductivity. After sucrose and DI water, tap water was next with 347 μS/cm, then NaCl with 1122 μS/cm, then MgCl2 which measured 2904 μS/cm, and lastly AlCl3 which was the most conductive at 3054 μS/cm. The trend for all the substances containing Chlorine was that the conductivity increases going from left to right on the periodic table. It is shown in our results as the elements being Na, Mg, and Al go from lowest conductivity to highest. Tap water and DI water have different conductivities due to there being contaminants in tap water that allow
First we used dry pH paper to test the acidity of household ammonia, and it turned yellow. According to the legend, this indicates a weak acid. This is, however, not accurate as the vapor of the household ammonia wasn’t able to react as strongly with the pH paper since it was dry.
Then, we used moist DI water pH paper with the same substance, household ammonia, and it almost immediately turned a green/blue color. This according to the legend indicates a definite base.
For bleach, our prediction was that it would be a base. When we held our dry pH paper over it, nothing much happened except a little corner of the litmus paper turned dark blue. This led us to assume that it is a base.
Moist pH paper was used to test the ammonium carbonate as they were smelling salts. The paper turned the same blue/green color, indicating that ammonium carbonate is also a base.
Most stains are acidic, and therefore it would be logical and favorable to have cleaning products that would be on the base side of the pH scale. …show more content…
Sucrose had the lowest conductivity at -3 μS/cm but since we were measuring in the thousands, and DI water had the second lowest conductivity of 0 μS/cm, I would say they both have a very low and similar conductivity. After sucrose and DI water, tap water was next with 347 μS/cm, then NaCl with 1122 μS/cm, then MgCl2 which measured 2904 μS/cm, and lastly AlCl3 which was the most conductive at 3054 μS/cm. The trend for all the substances containing Chlorine was that the conductivity increases going from left to right on the periodic table. It is shown in our results as the elements being Na, Mg, and Al go from lowest conductivity to highest. Tap water and DI water have different conductivities due to there being contaminants in tap water that allow