When Acetic acid and sodium bicarbonate react, a gas and water are produced. The gas we will refer to as Gas A. When Gas A is tested with a flame, a pop sounds, then the flame goes out. From what you know about balanced chemical reactions and fire, what is Gas A?

Add 5 pumps of Gas A. This should increase the volume to 1000 L. Using the 1000 L full volume of the simulator, lock the volume. If this gas were produced from the reaction of acetic acid and sodium bicarbonate, how many moles of each reactant would be needed to produce this amount of gas?

Trial Gas A Gas B Resulting Pressure Resulting Volume
1 1 pump 0 pumps 1.00 atm 714 L
2 2 pumps 0 pumps 1.43 atm 1000 L
3 3 pumps 0 pumps 2.14 atm 1000 L
4 4 pumps 0 pumps 2.86 atm 1000 L
5 5 pumps 0 pumps 3.57 atm 1000 L
6 0 pumps 1 pump 1.00 atm 714 L
7 0 pumps 2 pumps 1.43 atm 1000 L
8 0 pumps 3 pumps 2.14 atm 1000 L
9 1 pump 1 pump 1.43 atm 1000 L
10 1 pump 2 pumps 2.14 atm 1000 L

Temperature (K) Pressure (atm)
555 K 6.83 atm
470 K 5.79 atm
460 K 5.66 atm
425 K 5.23 atm
400 K 4.92 atm
380 K 4.68 atm
340 K 4.19 atm
305 K 3.75 atm
270 K 3.32 atm
230 K 2.83 atm
205 K 2.52 atm

a. Determine the moles of Gas A involved in each reaction.
b. Does the identity of the Gas affect pressure? What does this tell you?
c. How closely does the gas in the simulator agree with the Ideal Gas Law? What evidence do you have of that?
d. Compare Gas A to Gas B or a combination of Gas A and B. Do the partial pressures obey Dalton’s Law?