In our experiment we decided to use .5 M instead of .81M and ran the test 6 times
In our experiment we decided to use .5 M instead of .81M and ran the test 6 times
All data and observations were recorded in the lab notebook. Pages from the lab notebook are attached to the lab. Results…
The purpose of this experiment is to determine the pH of known substances by use of a pH color indicator of red cabbage and the use of a pH meter. As well as, to observe the pH changes in a substance by adding in more basic of acidic to buffered solutions and unbuffered solutions. This experiment will also will show how to calculate H3O+, OH- and pH by use of known values. In order to do this lab, there are a few key components one needs to know and understand first.…
Hi Pam , how are you ? We are kind of confuse in your below comment regarding the pump ZW 8X6X10F¨, attached is the file that I received from FM back on August 19,2015 with the test points to perform and according to the Maximums Ratings attached and curves we really don´t know what is the mistake? Can you please point me out exactly what do you meant, so I can be able to revise it with the Lab Staff.…
Lingrui Ge Lab report October 18, 2015 Experiment #5 Separation and Qualitative Analysis of Cations CHEM 1315-088 Purpose of the experiment: To identify the substances that are present in a mixture. Materials: Test Solutions and Substances 6 M hydrochloric acid, HCl Sodium bismuthate, NaBiO3 (s) 6 M nitric acid, HNO3 0.1 M potassium thiocyanate, KSCN 6 M ammonia/ammonium hydroxide, NH3 3% hydrogen peroxide, H2O2 6 M sulfuric acid, H2SO4 Sodium bismuthate, NaBiO3 (s) 6 M sodium hydroxide, NaOH Cation Solutions 0.2 M silver nitrate, AgNO3 0.5 M lead (II) nitrate, Pb(NO3)2 0.2 M mercury (I) nitrate, Hg2(NO3)2 0.2 M iron (III) nitrate, Fe(NO3)3 0.2 M copper (II) nitrate, Cu(NO3)2 0.2 M manganese (II) nitrate, Mn(NO3)2 Equipment…
10/15/15: Today my experiment was approved. I plan to start on the 18th. 10/18/15: Today was the start date of my experiment.…
To summarize my data that I got was mostly in the 300-400 ´s. Also you can tell that the M&M did not make such of a difference so that was a bummer. This is because my hypothesis was that the M&M would do a difference and probably weigh down the rocket. I think our accuracy was off because the M&M did not do to much for us. Finally my question is why did the M&M not do anything with the paper…
To keep the trials constant, the starting water quality needs to stay the same, the amount of water needs to stay the same, and the container needs to stay the…
Complete perfection, even in a laboratory environment, is not truly a possibility. Specifically, instrumental limitations were present. Any of the fluids may not have been perfectly at 50 mL, because exact measurements are unmanageable. Also, there is no possible way to…
That might be a concern for future research. Overall, the experiment went very…
Figure 1 shows the relationship between concentration and absorbance known as the Beer-Lambert law or calibration curve. The data from the made solutions in table 2 was used to create the graph. The graph has a linear trend line that predicts where a point would fall on the graph. The equation of the trend line is equation 7: y=0.9508x-0.0055 with a R2 value of 0.99943. This equation was used to find the true concentration of the made solutions as well as the unknown solution.…
If I had a chance to redo this experiment, I would take my time and make sure I am concise, so that I may receive the best results All in all, it is our responsibility as a consumer…
Purpose To investigate the effect of temperature on the rate of the thiosulphate reaction. Hypothesis If the temperature increases, then the rate of the thiosulphate reaction will also increase. Variables Independent variable: Temperature change in each experiment, which will be varied by increasing the temperature by 10°C each time.…
I. Purpose: The purpose of this lab is best understood by the principles of static electricity, as two rough objects rub against each other the atoms of those objects touch and pull upon each other sporadically. When this occurs the electrons of those atoms will transfer between these objects and static electricity is generated. This lab is performed to see the role that static electricity has on objects, when determining their charge and how they interact, all seen by a firsthand course of action. This process extends to determining the charge of objects with respect to this principle by the utilization of tape.…
The volume of sodium thiosulphate will be 50cm³. The different concentrations of hydrochloric acid are 0.10M, 0.25M, 0.50M, 0.60M, 0.90M and 1.0M. Now, I will discuss my prediction of what will happen during the experiment. Prediction: My prediction is, • As I increase the concentration of hydrochloric acid and add it to the sodium thiosulphate the rate of reaction will decrease. This happens because more particles are being added to the solution when the concentration increases.…