Baking Soda Lab Report

From the results that were acquired from mixing the liquid reagents with each powder, it was determined that Unknown Mixture #1 consisted of baking soda and cornstarch. When individually testing the substances from Unknown Mixture #1 with the liquid reagents, a few noticeable reactions occurred. Mixing baking soda with vinegar caused bubbling to occur. This is because a neutralization reaction took place between the two reactants. In this reaction, sodium bicarbonate(baking soda) reacts with vinegar and produces sodium acetate, water, and carbon dioxide(HC2H3O2(aq) + NaHCO3(aq) NaC2H3O2(aq) + H2O(l) + CO2(g) ). The gaseous carbon dioxide most likely tried to escape into the atmosphere and caused the bubbling to occur. Another noticeable reaction

In conclusion, the more baking that was added in the reaction the more gas that was produced. When there was only one scoop of baking soda, the least amount of gas was produced, when three scoops of baking soda were used, the most amount of gas was produced. The number of bubbles roughly stayed the same, so the number of bubbles created was not affected by the amount of baking soda. With increments of 1 scoop of baking soda, small amounts of gas are produced each trial. We compared each trial by identifying the firmness of the bag due to the gas. Since gas takes up space of the bag, the more firm the bag is, the more gas is produced. Therefore, our hypothesis of having more baking soda will make more gas is correct.

The limiting reactant of a chemical reaction is the substance that places an upper bound on the amount of product that the reaction can produce. The limiting reactant places this upper bound because the reaction must stop once all of the limiting reactant is consumed.

For this lab, we brought a empty soda can to school to show how pressure and temperature can affect the structure of the can. To begin the experiment, we needed a empty soda can, water and ice in a small plastic tub, and a hot plate. First, we added about a tablespoon of water to the empty soda can. Second, we put the soda can on the hot plate and waited until the water was brought to a boil. Then we used beaker tongs to carry the hot soda can and flipped it over into the container of water and ice. Once the can touched the water, the can made a loud crushing sound and the can crippled inward.

As the water inside the can is heated, we used the tongs to place the soda can upside down in the beaker with cold water. After a loud noise, the can is crushed by the pressure inside the can. As the Can is been heated, the gas particle has

1. The Regular Soda may have sunk since the sucrose sugar weighs more than the aspartame sugar that is in the Diet soda. One more possibility is that the Diet soda had more carbonation injected into it than the Regular soda, making the Regular soda sink lower and Diet soda float. 2. Another possibility is that the Diet soda had a malfunction while in the factory process and it never got filled with soda and only air.

U12720372 CHM2045L.006F14 General Chem I Laboratory Rong Zhang 11/17/2014 General Chemistry 2045 Lab: Dilution and Absorbance of Commercial Dye   Introduction Light is made of photons that can be formulated into particular wavelengths based off of their photon energy. The longer a particular wavelength is the lower the energy and the shorter the wavelength, the high the energy.

If the 0.2 g, 0.4 g, 0.6 g, 0.8 g, or 1 g (±0.1) of baking soda used in this experiment increases, then the volume (mL) (±0.5) of the carbon dioxide released from the decomposition will also increase.

The chemical reactions that could be used to store energy are Decomposition Reaction (Invisible Ink) and Reversible Decomposition-- Combination Reaction (Dehydration of Blue Vitriol/ Rehydration of Copper (II) Sulfate). 2. The following reaction is exothermic, Heme-O2 +CO  Heme-CO+ O2 .

This is done through a change in temperature. Over time, two objects that are in direct contact will

In the chemical and physical change lab, we figured out what a chemical change is. A chemical change is a change in which one or more substances are converted into a different substances. That means if a chemical change occurred the substances will be turned into a different substance. In order to know if a chemical change happened you will see bubbles, a color change, energy released as heat and light or a solid participate. The first example, of a chemical change in this lab is bubbles. In stations 6 and 8 each had bubbles in them. In station 6 the zinc was put into the HCI acid and once they touched they got bubbly and cloudy. Also in station 8 when a spoonful of baking soda and HCI acid touches the solution, it started to bubble and fizz.

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

The mixture of sodium bicarbonate and sodium carbonate can be separated due to the different temperatures at which the carbonate and bicarbonate decompose. This separation is the focus of the experiment. The bicarbonate decomposes when heated by the Bunsen burner. The carbonate also will decompose but at a much higher temperature. So, when the bicarbonate is heated it decomposes into carbonate, and during the decomposition it releases water and carbon dioxide. Furthermore, the amount of water and carbon dioxide released can be found by finding the difference in mass of the original mixture (before heating) and the final mixture (after heating). The mass of the water and carbon dioxide can be used to find the percent composition of bicarbonate in the mixture.

If 10.0g of solid baking soda is poured into 30 mL of citric acid, then a reaction will occur and an increase in temperature will be observed. Whereas, if a piece of magnesium metal is added to 30 mL of Hydrochloric Acid, then a reaction will occur and an increase in temperature will be observable. For Part 3 of the experiment, if 50 mL of tap water is placed in a can 2.5 cm inches above a burning marshmallow, then through the process of calorimetry the energy content of the marshmallow should be 5.0kJ/g (the value provided by the United States Department of Agriculture).

By adding acid to the baking soda, it caused the substance to form bubbles and release gas. More drops of HCl were added until the bubbling