Thursday, February 16, 2012

Mole Relation-Baking Soda & Vinegar Reaction

In this experiment, we combined baking soda and vinegar to discover a reaction.

NaHcO3 + HC2 H3 O2 -> CO2 + H2 O + NaC2 H3 O2

Materials:
     20 ml vinegar in a large pipette
     balance
     100 ml beaker
     1 gram baking soda

First, we filled a large pipette with vinegar and measured it (data shown in chart below). Next, mass of the empty 100 ml beaker was recorded before approximately 1 gram of baking soda was placed into it. Mass of the baking soda was found soon after. About 3/4 of the vinegar in the pipette was added to the baking soda. After, a few more drops were added, swirled around, and bubbles were produced. Mass of the left over vinegar and vinegar used in the experiment were recorded.



Data Table:


Initial mass of pipette in grams                                      .98 g
Net mass of vinegar used in the reaction                     86.8 g      
Mass of empty beaker in grams                                    112 g
Net mass of baking soda in grams                                     5g

PREVIOUSLY IN CHEMISTRY:
Aluminum and Copper (II) Chloride reaction. Notice how rapid the movement of the bubbles is! In comparison, bubbling in the Baking Soda Reaction lab were much less rapid than those in the Aluminum and Copper (II) Chloride reaction.


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