Describe the reaction which produces carbon dioxide, including molecular details

Question

Describe the reaction which produces carbon dioxide, including molecular details. Hi in class we did an experiment where we took sodium bicarbonate and acid and messured pressure. This was our results:

Trial

Target NaHCO3 Mass (g)

Actual Sodium Bicarbonate Mass (g)

Target 5% Acetic Acid (mL)

Actual 5% Acetic Acid (mL)

Peak Pressure

1

0.20 ± 0.01

0.21g

3.0 ± 0.1

3.2mL

107.57 kPa

2

0.15 ± 0.01

0.159

2.3 ± 0.1

2.38mL

112.60 kPa

3

0.10 ± 0.01

.105g

1.6 ± 0.1

1.62mL

104.99 kPa

We then had a second trial where we monitored temperature effects on captured gas. These were our results.

Trial Number

Pressure

Temperature

Trial 1

107.12 kPa

25 Celsius

Trial 2

105.18kPa

20.2 Celsius

Trial 3

101.97 kPa

14.3 Celsius

Trial 4

110.18 kPa

10 Celsius

I feel like we did something wrong but I am not sure? Anyways from this data can you help me answer this

Describe the reaction which produces carbon dioxide, including molecular details. Also, I have to determine the mass of carbon dioxide produced by the reaction. How do I do that?

Thanks in advance!

Trial

Target NaHCO3 Mass (g)

Actual Sodium Bicarbonate Mass (g)

Target 5% Acetic Acid (mL)

Actual 5% Acetic Acid (mL)

Peak Pressure

1

0.20 ± 0.01

0.21g

3.0 ± 0.1

3.2mL

107.57 kPa

2

0.15 ± 0.01

0.159

2.3 ± 0.1

2.38mL

112.60 kPa

3

0.10 ± 0.01

.105g

1.6 ± 0.1

1.62mL

104.99 kPa

Explanation / Answer

The reaction is

CH3COOH + NaHCO3 = CH3COONa + CO2 + H2O

NaHCO3 reacts with acetic acid to form H2Co3, which then breaks down to form CO2 and water.

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To measure the mass u have to use ideal gas equation

PV = nRT

P = your measured pressure

T = your measured temperature

V = volume of the container u used

R = 0.082 L atm /K/mol

Also convert kPa to atm unit by multiplying each value with the factor 0.00987

Find out n.

n = moles of CO2 = mass of CO2/44g/mol

or, mass of CO2 = moles of CO2 * 44g/mol

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