Sodium Bicarbonate Lab Report

We were assigned mystery powder convertible which contained calcium carbonate, baking soda, and sucrose. We found out that the mystery powder had calcium carbonate because when it reacted with iodine it turned orange/brown. When calcium carbonate reacted with vinegar it had a fizzy-like reaction. It also reacted with hydrochloric acid and that caused it to bubble. When we tested the mystery powder it also turned orange/brown when we added iodine. Also when we added vinegar and it also fizzed like the calcium carbonate. Again when we added the hydrochloric acid it reacted exactly like calcium carbonate, lots of bubbles were made. We know that the calcium carbonate was in the mystery powder because it had similar reactions.

Similarly, the sugar, baking soda, Epsom salt, and washing soda are all dissolved in water. Next, we observed the color after adding the universal indicator. The unknown substance came out a greenish yellow and almost perfectly matched, the Urocit-K had the same. Then, we tested the reactions the solids had with heat. The unknown substance did not react.

The purpose of this lab is to synthesize bromocyclohexane from cyclohexane and pyridinium hydrobromide perbromide using reflex method. The product obtained is put through various tests such as Beistein, NaI, and AgNO3 tests for halogen testing, and GC analysis for determining the purity of the product.

The class believes that it is C6H8O7 and NaHCO3 because of their physical and chemical properties. The mystery mixture has some chunky parts, along with some

Heat was felt. The color of the liquid was a pasty white, and there was white foam that began to form. The foam began to spread out and then it shrank. The combination of substances maintained the state of a liquid. There was a fizzing noise after the chemicals were mixed. No recognizable odor given off.

The first clue that a chemical reaction occurred was the change in color between substances throughout the series of experiments. In the control experiment phenol red, calcium chloride, and sodium bicarbonate were mixed together

Counterclaim:I disagree with the other group that thinks it's baking soda,citric acid, epsom salt. I disagree with them cause me and my partner tested both thoughts of each group. The first thing me and my partner did was put it in a well tray and put water in it. Then we tested the temperature the mystery mixture was 15.9, baking soda and citric acid was 16.2 degrees Fahrenheit, and baking soda citric acid and epsom salt was 16.8. After we did this we put 10 drops of water in them and left them overnight. When we came back the next morning we looked and they all turned to a crystal looking thing on the bottom of the well tray they were all white but baking soda, citric acid and epsom salt looked a little different because at the bottom it had more white color. But for baking soda and citric acid it left barely any color just like the mystery mixture. That is why I disagree with baking soda, citric acid and epsom salt.

In the last test, we had to test out a mystery powder (powder A, B, C), in its own separate test tube, in order to solve the Sherlock Holmes Mystery. Our group had powder C. When we mixed water in the mystery powder, it did not dissolve. When the litmus paper was put into the test tube it turned blue. When the vinegar was mixed it bubbled/foamed up. When we mixed the iodine solution, there was no reaction and the solution turned to a dark brown/black color. When we mixed in the baking soda there was no reaction and it turned to an even darker color.

I figured this out by using the results from the five tests then using the process of elimination. You need to explain the specific tests and HOW you eliminated certain ingredients. The suspect I think committed the crime is Tavaglione. The way I figured this out was I took the results from each powder then compared the powder with the evidence sample. I found that the heat test was the most helpful because, you can hear and see a difference in the substance that is being tested. A test that made a chemical reaction was the vinegar test. What are the 5 signs of chemical reaction? I think more tests than just the vinegar test yield chemical reactions. The vinegar test makes a chemical reaction because, when the vinegar touched the ingredient it will create bubbles. After figuring out E&B have are the same ingredients as the footpowder I still had to test the evidence to see if they were the exact same ingredients. You would also want to test the evidence twice to make sure you didn’t make a

The Vanish demonstrated characteristics of chemical changes through color changes as well. The Clorox Liquid Bleach reacted with all reagents except HCl. With the blue food changed color from clear to blue and formed a solid white precipitate with silver nitrate. Also with thymol blue changed from clear to yellow solution.

The soda ash form experiment 3 was obtained. A 250 ml beaker was obtained and rinsed.

A mixture, unlike a compound, can be separated by physical means. There are multiple ways in which a mixture can be separated; furthermore, the ways it can be separated is based on what the mixture is made up of.

These reactions can be seen from just a little bit of reaction all the way up to a complete change of the entire sample tested. Some samples of those tested in this experiment which showed the chemical reaction were the baking soda/ammonia mixture, the Epson salt and baking soda mixture as well as the food coloring mixed with the baking soda and bleach. 2. Which reactions, if any, do you believe showed no evidence of chemical change? Justify your reasoning.

In order to show you why these students believe the mystery mixture is a combinations of NaHCO3 & C6H8O7 I will need to show you the mixture’s chemical and physical properties. The NaHCO3 & C6H8O7 mixture is a bright white color, and has a slight airy smell. The claim also has a powdery white substance or the NaHCO3. It also has small white spheres, that resemble the mystery mixture’s, which is probably the C6H8O7. The students have also learned through experimentation that if you leave the

Place 2 ml of 0.1 M Na2SO4 solution in a test tube and 2 ml of your unknown in another test tube. Add 1 ml of BaCl2 to each test tube. Add 10 drops of 6 M HNO3 to each test tube. Any white solid that remains is BaSO4. The color of unknown B was clear while the color of Na2SO4 was milky, which means SO42- was present.