Observing Different Types of Reactions

Decomposition Reaction

Procedure:
NaHCO3 (s) ——> Na2CO3 (s) + H2O(g) + CO2 (g)
2 NaHCO3 (s) ——> Na2CO3 (s) + H2O(g) + CO2 (g)

Obtain an alcohol burner, a test tube, and a ring stand with a clamp. Put one small scoop of NaHCO 3 in the test tube. Secure test tube with clasp attachment on the ring stand. Light up the alcohol burner. Make sure the flame is heating the bottom of the tube evenly. After 40-60 seconds, light a match and hold it directly above the opening of the test tube. Record observations.

Result:
The match fire is gone and there this and evaluation at the edge of the test tube.

Observation:
There is water at the edge of the test tube when we fire the test tube with
alcohol burner
The baking soda is decreasing it volume
The match fire is gone
Conclusion:
The match fire is gone because they are no oxygen in there. The CO2 is preventing the oxygen to come up.

Single Displacement Reaction

Procedure:
Al + HCl= Alcl3 + H2
2Al + 6HCl= 2Alcl3 + 3H2

Obtain test tube and test tube rack. Take a small piece of aluminum foil and put it into a test tube. Add just enough Hydrochloric acid to cover the small piece of foil. Observe reaction.

Result:
There a bobble coming up

Observation:

• There is bobble coming up
• The aluminum foil sit at the bottom for 4s than it float
• The bobble coming out of the aluminum foil
  Conclusion:
  The foil has reacted with the hydrochloric and it releasing the CO2 that why there is an oxygen.

Double Displacement

Procedure:
CuSO4 + NaHCO3 —–> CuCO3 + CO2 + H2O + Na2SO4
CuSO4 + 2 NaHCO3 —–> CuCO3 + CO2 + H2O + Na2SO4

Put a small amount of the Cupric Sulfate solution we have made into a test tube. Add a small amount of baking soda. Observe reaction.

Result:
Getting the reaction of the baking soda with the Cupric sulfate to increase the bobble

Observation:
The baking soda changing color
The bobble increase so fast
Have less liquid in there

Conclusion:
The reaction is similar to the single displacement to just it has a different element to react and the double has a faster reaction