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The Blue Bottle Reaction: An Exercise in Observation and Deductive Reasoning Skills

Autor:   •  January 15, 2018  •  2,517 Words (11 Pages)  •  738 Views

Page 1 of 11

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Trial

Shake Time (sec)

Transfiguration Time (sec)

Other Observations

Control

- Shake 1

- Shake 2

- Shake 3

- Shake 4

20

10

27

20

120

120

110

120

The solution in the bottle changes from blue then fades to transparent.

Double Methylene Blue

- Shake 1

- Shake 2

- Shake 3

20

20

30

150

150

180

It was observed there was a slightly longer time change for the color.

Double Vitamin C

- Shake 1

- Shake 2

- Shake 3

10

20

20

135

150

150

There was a less intense change in the color observed.

1/2 Amount of Salt

- Shake 1

- Shake 2

- Shake 3

10

20

20

105

150

150

There was a larger change in color. The color was darker

Table 2. Transfiguration time as a function of the various amounts of each ingredient.

Trial

Ingredients

Observations

Trial 1 (Control)

All Ingredients Added

The methylene blue rose to the top and the remaining under the top layer was clear.

Trial 2

NaCl was withheld

The methylene blue still rose to the top regardless NaCl was not presented.

Trial 3

Vitamin C withheld

The methylene blue did not rise to the top. Vitamin C is key in order for the reaction to work properly.

Table 3. The effects of withholding certain ingredients from the solution.

Trial

Transfiguration Time (min)

Amount of Vitamin C (g)

Other Observations

Trial 1

3.5

0.3

The reaction time was longer when less Vitamin C was added.

Trial 2

3

0.6

This was the control amount of Vitamin C added is the same throughout.

Trial 3

2

0.9

The reaction time decreased when more Vitamin C was added.

Table 4. Transfiguration time as a function of the amount of Vitamin C.

Trial

Amount of Salt (g)

Transfiguration Time (sec)

Other Observations

Trial 1

- Time 1

- Time 2

- Time 3

0.0

210

200

205

With no salt added, it takes longer than the control.

Trial 2

- Time 1

- Time 2

- Time 3

0.25

75

68

70

It was observed the less amount of salt added to the solution, the shorter it took for it to become clear.

Trial 3 (Control)

- Time 1

- Time 2

- Time 3

0.5

118

123

121

This was used as the control. It took about the same time for each groups to dissolve.

Trial 4

- Time

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