Based on the both data sets (bicarbonate and Benedicts) what affect did Mg have on the rate of the reaction? Justify your answer with both data sets.

The data you will need to answer the following questions are listed in Table 1.

Table 1: Color, estimated pH and absorption every 10 min from the bicarbonate solution.

Time (min)	W Syringe			G Syringe
	Color	Estimated pH	Absorption Å	Color	Estimated pH	Absorption Å
0	Red/Purple	8.8	0.779	Red/Purple	8.8	0.761
10	Red/Purple	8.8	0.734	Red	8.6	0.624
20	Red/Purple	8.8	0.751	Red	8.6	0.603
30	Red/Purple	8.8	0.753	Dark 0range	8.4	0.583
40	Red/Purple	8.8	0.753	Dark orange	8.4	0.504
50	Red/Purple	8.8	0.751	Orange	8.2	0.433

 

Time (min)	Mg Syringe
	Color	Estimated pH	Absorption Å
0	Red/Purple	8.8	0.729
10	Red	8.6	0.607
20	Dark 0range	8.4	0.529
30	Orange	8.2	0.407
40	Orange/Yellow	8.2	0.334
50	Orange/Yellow	7.8	0.308

 

2) (2 pnts) Calculate the change in absorption using the formula ABS₀ – ABS_T (Absorption at time 0 min – the Absorption at time T min) and place the values in Table 2.

 

Table 2: Change in absorption over time for the bicarbonate solutions.

Time (Min)	W Syringe	G Syringe	Mg Syringe
0	0	0	0
10
20
30
40
50

 

3) (4pnts) Graph (use scatter plot) the change in absorption over time for all 3 treatments (W, G, Mg) and paste the graph below. Be sure to label the axes.

 

4) (3pnts) Which reaction produced CO₂ the fastest? Use the rate of color change and the change in absorption to answer the question.

 

 

 

 

Data collected from conducting the Benedicts test are listed in Table 3.

 

Table 3: Results of Benedicts test

Treatment	Time 0  Absorption Å	Time 0 Color	Time 50 Absorption Å	Time 50 Color
W	0.021	Blue	0.022	Blue
G	0.593	Orange/Red	0.379	Yellow/Orange
Mg	0.589	Orange/Red	0.182	Green/yellow

 

6) (1pnts) Calculate the change in absorbance between Time 0 and Time 50 from the Benedicts test and place the results in Table 4.

 

Table 4: Change in absorbance in the Benedicts test

Treatment	Time 0 – Time 50 Å
W
G
Mg

7) (4pnts) Which reaction showed the loss of most of the glucose? Justify your answer with the data you collected.

 

8) (4pnts) Based on the both data sets (bicarbonate and Benedicts) what affect did Mg have on the rate of the reaction? Justify your answer with both data sets. (Note: if you know there was an issue with some of your data you can explain what you expected to happen and why your results do not match the expectation).