Something Random

Purpose: The purpose of the lab was to test the concepts of the combined law principles including Charles's law, Boyle's law, and Gay-Lussac's Law. (to analyze and break down each component of pressure, volume, moles, temperature; and how they affected another variable in this lab).

Research: The balanced chemical equation would look along the lines of this:

NaHCO3 + CH3COOH  NaCH3COO + H¬2O+CO2

For this lab, the reactants were baking soda (sodium bicarbonate, NaHCO3) and Vinegar (acetic acid, CH3COOH). And the products were sodium acetate, water, and carbon dioxide. I would expect to see, well obviously some kind of reaction, but from past science classes regarding the common household ingredients, baking soda and vinegar, the most common reaction was foaming and bubbling overflowing the container.

PV=nRT; whereas P=1atm, V= ?, n=1mol, r=0.0821, T=(20+273)K

If the experiment took place at room temperature within atmospheric pressure, we would see about 24.1Liters of gas, but the actual result will vary due to human flaws (error in reading or calculating, very precisely of the measurements).

Procedure:

1. Pour 17g of baking soda into a balloon

2. Pour 80 mL of vinegar into a plastic bottle

3. Holding the balloon so all the baking soda remains in it, fit the mouth of the balloon over the rim of the plastic bottle, so the baking soda and vinegar shall not touch yet.

4. Lift the head of the balloon and gently shake so the baking soda falls into the vinegar in the bottle, and make sure to hold the balloon to the soda bottle so it doesn't pop off.

5. Measure the circumference of the inflated balloon with a string, then measure the string with a ruler

6. Record amount of each ingredient added and the final size of the balloon.

7. Create a data table to record class data gained, including amounts of vinegar and baking soda used and the circumference + volume.

8. Share group data with the class and record class data in your table.

Data: