Science fair

Topics: Chemical reaction, Sulfuric acid, Sugar Pages: 6 (1486 words) Published: January 17, 2014

Abstract
This project was conducted to show how dangerous acids can be when in contact with water. Sulfuric acid is a highly dangerous acid, especially when concentrated. If we combine sulfuric acid with something as common as different types of sugar, even the smallest amount of water will react with sulfuric acid creating an exothermic reaction, and different types of sugar at different amounts will cause the reaction to take longer because of the change in surface area. For the experiment, different types of sugar were mixed with sulfuric acid. The exothermic reaction created a lot of heat as well as a carbon column from the sugar. The sulfuric acid acted as a catalyst which dehydrated the water from the sugar. Such results were tested between the surface area of sugar. Normal sugar took nearly twice as long (37 seconds) as powdered sugar (17 seconds) to react. This important data reveals how the surface area effects the chemical reaction process. Ultimately the sulfuric acid demonstrated an exothermic reaction with all sugar types due to the fact that even sugar contains traces of water. The primary reason the reaction happened is because acids are dangerous when combined with water.

Experimental design:
Hypothesis: If we combine sulfuric acid with something as common as different types of sugar, even the smallest amount of water will react with sulfuric acid creating an exothermic reaction, and different types of sugar at different amounts will cause the reaction to take longer because of the change in surface area. Independent variable: Type of sugar and quantity of sugar

Dependent variable: The sulfuric acid and the reaction between it and the sugar Trials:

50 ml of normal sugar
100 ml of normal sugar
50 ml of powder sugar
100 ml of normal sugar
50 ml of brown sugar
100 ml of brown sugar
100 ml of sulfuric acid
Control
Trial 1a
Trial 1b
T1c
T1d
T1e
T1f
50ml of sulfuric acid
Trial2a
T2b
T2c
T2d
T2e
T2f
150 ml of sulfuric acid
Trial 3a
T3b
T3c
T3d
T3e
T3f
250 ml of sulfuric acid
Trial 4a
T4b
T4c
T4d
T4e
T4f
300 ml of sulfuric acid*dangerous*
Trial 5a
T5b
T5c
T5d
T5e
T5f

Constants:
98% concentrated sulfuric acid (H2SO4)
Normal sugar, powdered sugar, brown sugar
Beakers and equipment
Safety work space
Setting temperature
Disposal devices

Procedure:
Step 1: safety precautions. Make sure to wear face protection, eye protection, gloves, long sleeves, long pants, show protection, and hair protection. YOU DO NOT WANT ANY SKIN SHOWING. Step 2: Set up Lab. Place newspaper on a flat ground in a well-ventilated area. Then layer it with wax paper, then coat it with baking soda (so it can neutralize any acid spill) Step 3: set up mixing beaker. First get at least an 11” x 9” bucket and coat another layer of baking soda in there. Then place a 500 ml beaker in the center. This will be referenced as “ba” for now on. Step 4: on the side, acquire another 500 ml beaker. This will be referenced as “bb” for now on. Step 5: Fill ‘ba’ with 50ml of normal sugar (C12H22O11)

Step 6: fill ‘bb’ with 100ml of sulfuric acid (H2SO4)
Step 7: pour ‘bb’ into ‘ba’ and stir. Wait for color to change and once an air bubble appears stirring will no longer be necessary. Step 8: Once steam starts to become present, sit back and watch as the carbon column rises from ‘ba.’ Step 9: Once reaction is complete and it is safe to touch carbon column, remove carbon column and begin to clean out ‘ba’ and prep it for reuse. (prep requires neutralization of any residue acid remaining in the beaker, so baking soda would be appropriate for proper cleaning, then rinse with water. Step 10: Repeat steps 5-9 except with modifications: this time, we will change amount of sugar, so increase sugar amount to 100 ml. This is to analyze whether more sugar could affect the process. Step 11:Repeat steps 5-9 except with modifications: this time, we shall change the sugar type, so instead of normal sugar...
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