Heat from Acid-Base (Neutralization) Reaction of Vinegar and Baking soda Base + Acid = Salt (general, NOT necessarily table salt) + water + maybe some other by-products Acetic acid + Sodium Bicarbonate = Water + Salt + carbon dioxide CH3COOH(aq) + NaHCO₃(s) = H2O + CH3COO-Na+ + CO2 Instructions: Measure 2 ounces of vinegar using a measuring cup and place it in the coffee-cup calorimeter. Assuming the density of vinegar is the same as water at room temperature: 1.00 g/mL, calculate the mass of the vinegar and record in Table 3. Read the thermometer and record the temperature in Table 3. Weight about 1 gram of baking soda using the weight scale. Record the exact weight of baking soda in Table 3. Put all the weight baking soda in the calorimeter and cover it with the lid right away. Observe the temperature. Swirl your calorimeter for mixing. Observe the temperature. Keep swirling until there is no change in temperature. Record the temperature in Table 3. Repeat the experiment in record in Experiment 2 column in Table 3. Table 3: Heat Acid-Base Reaction of Vinegar and Baking Soda Experiment 1 Experiment 2 Average Mass of vinegar (g) Initial temperature of vinegar (0C) Mass of baking soda Final temperature of the mixture (0C) Q1: When you add baking soda to vinegar you create bubbles. Based on your chemical reaction equation for the reaction between acetic acid and sodium bicarbonate, what product do you think caused the bubbles? Explain your answer.
Heat from Acid-Base (Neutralization) Reaction of Vinegar and Baking soda
Base + Acid = Salt (general, NOT necessarily table salt) + water + maybe some other by-products
Acetic acid + Sodium Bicarbonate = Water + Salt + carbon dioxide
CH3COOH(aq) + NaHCO₃(s) = H2O + CH3COO-Na+ + CO2
Instructions:
- Measure 2 ounces of vinegar using a measuring cup and place it in the coffee-cup calorimeter.
- Assuming the density of vinegar is the same as water at room temperature: 1.00 g/mL, calculate the mass of the vinegar and record in Table 3.
- Read the thermometer and record the temperature in Table 3.
- Weight about 1 gram of baking soda using the weight scale.
- Record the exact weight of baking soda in Table 3.
- Put all the weight baking soda in the calorimeter and cover it with the lid right away.
- Observe the temperature.
- Swirl your calorimeter for mixing. Observe the temperature.
- Keep swirling until there is no change in temperature. Record the temperature in Table 3.
- Repeat the experiment in record in Experiment 2 column in Table 3.
Table 3: Heat Acid-Base Reaction of Vinegar and Baking Soda
|
Experiment 1 |
Experiment 2 |
Average |
Mass of vinegar (g) |
|
|
|
Initial temperature of vinegar (0C) |
|
|
|
Mass of baking soda |
|
|
|
Final temperature of the mixture (0C) |
|
|
|
Q1: When you add baking soda to vinegar you create bubbles. Based on your
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