Mohammed Alyousif, Brianna Nagel, Lexi Keaveney

Our reaction: NaHCO3 + HCl+H2O NaCl + CO2 +2H2O

We started with the maximum pressure to calculate the # of moles needed.

5 ATM = n (.08205 L-Atm/mol-K)(293K) / 0.7 Ln= .146 moles

Then we converted moles to measurements we could use..146 molesNaHCO3*(84g/mol)=12.3g NaHCO3

.146molesHCl*(1 L/12.1moles)*(1000mL/1L)=12.1ml

As water doesn’t effect the reaction, we decided to try adding it at different intervals to decrease the volume and help our car

move farther. We found 10mL worked best.

Reacti on Chemistry

We wanted the bottle at an angle to increase the thrust. We used zip ties to connect our bottle to the car. We also tried to make the car as stable as possible, though we had some difficulty attaching the bottle to the car so that it was exactly straight.

Our Car Design

NaHCO3(g) Acetic Acid(mL) Distance(ft)10.9 150 14.710.7 150 15.510.8 150 15.2

Tests with Baking Soda and Vinegar

Tests with Baking Soda and HCl

Experimental Results

NaHCO3(g) HCl(mL) H2O(mL) Distance(ft)12 12 0 4

12.2 12 5 14.512.3 12 7.5 11.512.3 12 10 1912.3 12 10 1712.3 12 10 2012.3 12 10 17

Our original car idea(seen above) would have produce no spew, as it had a filtration

system, unfortunately we had many issues with the system leaking and could

never get the actual car to move.

The car performed well a few times, but it was fairly inconsistent, especially on race day. It flipped a

few times and curved to the right on most runs, so we could have redesigned the base of the car to make

it more stable. Throughout the project we redesigned the wheels several times to try and

reduce friction. We also tested a number of body structures until we found the one that moved the

best.

Conclusion