Reaction Rate Of Sodium Hydrogen Carbonate Lab Report

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Reaction rate of sodium hydrogen carbonate
My aim of this investigation is to determine the reaction rate of sodium hydrogen carbonate and to gain a greater understanding of the chemical and its function. The significance of this lab is mainly personal since I love baking and am curious about the chemistry of the process. However, it is also important to know how much sodium bicarbonate could be used if I were to construct my own recipe, to receive a wishful result.

Research Question
How does the amount, in grams, of NaHO3(s) affect the volume of CO2(g) produced when heated with a Bunsen burner over a time span of 120 seconds, that is, what is the reaction rate of the decomposition for sodium hydrogen carbonate?

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One possibility is to measure the change in mass of NaHCO3 by putting it on a weighing scale connected to the computer. As the is being produced the chemical will weigh less over time. However, a problem with this method is that it is hard to heat the compound when it is stationary on a balance. To solve that problem, I could have mixed sodium bicarbonate with an acidic compound, since that would produce carbon dioxide as well. However, I wanted to just focus on just baking soda, so another method needs to be used.

If I instead were to focus on the products, the volume of gas produce could be measured. A convenient method of collecting a gas is to put the chemical in a test tube which has a delivery tube connected to it. Put a measuring cylinder filled with water upside down in a through with water, and then heat the test tube with a Bunsen burner. Since the gas has a lower mass and are less dense than water, it will be pushed out from the measuring cylinder and the gas will rise to the
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It is manipulated by increasing the mass by 0.5 grams each trial. The range is 2 grams, the five increments included were, 0.5 g, 1.0 g, 1.5 g, 2.0 g, 2.5 g. I used a weighing scale with uncertainty 0.001 g to enable an as accurate investigation as possible. The dependent variable is the volume of gas produced, measured in ml, that is cm3. A measuring cylinder with uncertainty 0.05 cm3 was used to record the raw data. Each data was conducted at certain time intervals and each trial was repeated three times to increase accuracy.
This experiment requires three different controlled variables. Firstly, to be able to measure the reaction rate, interval time recordings are essential, and it is therefore a must to test each trial during the same time period. I will use a stop watch and collect the volume every 20ths second, 120 seconds in total, that is, six time recordings. Also, the heat (energy) and the distance between the Bunsen burner (source of energy) and the test tube need to be under control. The sodium bicarbonate will decompose faster if the energy is higher or if the source of energy is closer to the test tube. This will be controlled by using the maximum gas and keep the position of the Bunsen burner (10 cm from the test tube) constant, this will ensure the trials to be exposed to the same energy

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