Chemical Reaction Lab Report

Next, I poured distilled water just below the 250ml mark on the neck of the volumetric flask.

The purpose of the lab was to determine the ratio of air to acetylene results in complete combustion of acetylene gas. The balanced chemical equation for this experiment was C2H2(g) + O2(g) --> CO2(g)+ H2O(l). Complete combustion is the reaction of an element or compound with oxygen to produce the most common oxides and energy. Complete combustion occurs when the fuel and oxygen combine in exact proportions to completely burn the fuel, which leaves a clean test tube. Incomplete combustion is the reaction of an element or compound with oxygen to produce some oxides with less oxygen than the most common oxides. Incomplete combustion occurs when there is not enough oxygen to react

There are four major systematic errors in the laboratory, which are the fact that some of the Alka-Seltzer pills were chipped, some of the water splashed out of the beaker, we didn’t know when the reaction was actually finished, and the mass of the Alka-Seltzer might have been different.

9) 10 mL of sugar was added to the solution and the balloon was quickly placed over the opening of the bottle to minimize the loss of any gas from the system.

    One possible source of error that can affect the results was that a mercury thermometer was used instead of an electronic one. The use of a mercury

A chemical reaction is when substances (reactants) change into other substances (products). The five general types of chemical reactions are synthesis (also known as direct combination), decomposition, single replacement (also known as single displacement), double replacement (also known as double displacement), and combustion. In this lab, the five general types of chemical reactions were conducted and observations were taken before, during, and after the reaction. Then the reactants and observations were used to determine the products to form a balanced chemical equation. The purpose of this lab was to learn and answer the question: How can observations be used to determine the identity of substances produced in a chemical reaction?

Many combustion reactions involve the burning of organic compounds called hydrocarbons, compounds containing the elements carbon and hydrogen, or other organic compounds. When a hydrocarbon is burned completely, the products of the combustion reaction are usually carbon dioxide and water. Natural gas, propane, and wood all burn to produce carbon dioxide and water as the products.

In any chemical reaction, the mass of the products is less than the mass of the reactants.

Write a balanced chemical equation for each reaction #1-8. Classify each reaction using the information provided in the

The antacid tablets were not crushed properly, resulting in big crumbs of the tablet which will affect the dissolving process of the lab.

The next step in this lab is to rinse the Erlenmeyer flask with distilled water down the drain and then repeat the experiment, this time adding 10 ml of 0.10M KI and 10 ml of distilled water to the flask instead. The flask should again be swirling to allow the solution to succumb to the same temperature as the water bath and once it has reached the same temperature, 10 ml of 3% H2O2 must then be added and a stopper must be immediately placed on the flask and recording should then begin for experiment two. After recording the times, the Erlenmeyer flask must then be rinsed again with distilled water down the drain. After rinsing the flask, the last part of the lab can now be performed. Experiment three is performed the same way, but instead, 20 ml of 0.10 ml M KI and 5 ml of distilled water will be added and after the swirling of the flask, 5 ml of 3% H2O2 will be added. After the times have been recorded, data collection should now be complete.

The difference was in how long it took for the bubbles to come to the surface and the solution to become clear. Also, when doing the lab, once the correct temperature for the water was reached, the experimenter pulled the beakers out one by one completing all 5 trials. This may have caused slight fluctuations in data because by the time the 4 trials were finished, the temperature of the beaker may have increased by a few degrees. As for the act of measuring, there was a slight error because the experimenters did not take the beakers off the hot plate at exactly 30.00 degrees, or whatever the temperature may be. In order to provide more accurate results, the experimenter could do all

The law of conservation of mass states that mass can neither be created nor destroyed. The reaction between the baking soda, the sodium bicarbonate, and the vinegar, the dilute acetic acid, yields carbon dioxide gas, water, and sodium acetate. When the mixture is created in a beaker the carbon dioxide gas that is produced escapes through the large opening. In the plastic bag, however, the carbon dioxide gas should not escape if the bag is completely closed, thereby leaving the mass of the bag the same as it was before mixing rather than becoming a smaller amount. The independent variable in the experiment is container being used to hold the baking soda and vinegar mixture, either the plastic bag or the beaker. The dependent variable is the mass of the substances after they have been mixed together and the difference between that mass and its mass before the baking soda and vinegar were mixed. There is no control variable in this experimentThe first thing we did in the experiment was collect the required materials. For the experiment we needed baking soda, vinegar, a graduated cylinder, beakers, a plastic bag, twist ties, and a triple beam scale. We then measured the mass of one beaker on the triple beam scale. Once we had recorded the beaker’s we added in a small amount of baking soda.

Late 1700’s – law of conservation of mass – mass doesn’t change during a chemical reaction

The amount of water used in each experiment - If I use a large of