Moses Lugo
CHM 151-I2
November 2, 2012
Heat of Reaction
Purpose:
The chemicals reaction is:
CH3COOH(aq)+NaHCO3(s)NaCH3COO(aq)+H2O(l)+CO2(g)
The reactants of this chemical reaction are vinegar (CH3COOH ) and baking soda (NaHCO3 ) and the products that we got after the reaction were sodium acetate (NaCH3COO) water (H2O) , and carbon dioxide (CO2).
This lab was to learn about stoichiometry and to practice it. This is what helps figure out the amount of products we are going to produce by only knowing the amount of reactants we start with.

Materials:
Baking Soda {NaHCO3(s)}
Vinegar (5% by wt CH3COOH)
Foam cups (calorimeter)
Measuring spoons
Thermometer
Methods:
Accurately measure out ¼ cup of vinegar and pour it into the calorimeter. Determine the mass of the liquid by assuming the density of vinegar to be the same as that of pure water 1.0 g/ml. Compute the mass of acetic acid and the number of moles of acetic acid present in the calorimeter. Carefully measure 1 teaspoon of baking soda (1 teaspoon = 5 ml). Assume baking soda to be pure sodium bicarbonate (density = 2.16 g/ml). Determine the mass and the number of moles sodium bicarbonate in the teaspoon. Immerse your thermometer into the vinegar, record the temperature. Next, quickly add all of the baking soda and agitate the mixture. Remember if you are using a 12 oz cup the mixture may bubble over, carefully add the baking soda or use a larger foam cup. Observe the temperature continuously until it stops changing and record the final temperatures. Measure the volume of the solution by pouring it into a measuring cup. Assuming that the mixture has a density of 1 g/ml, determine its mass and record the solution’s mass and volume. Compute the change in temperature (DT), qsolution, qrxn and DH for the reaction as written in equation 2 and record your information.

Results:
When data has been