i need help with my homework

Anonymous
timer Asked: Jan 31st, 2021

Question Description

I'm working on a environmental engineering report and need an explanation to help me study.

Data Recorded:Slide the tabs up/down and record data from the Simulation for 15data points representing the pH range from -1 to 15. Only five of the values can be for whole pH values(1.00, 2.00, etc.).Record: Concentration of hydronium ion [H3O+], pH of the solution Results (require calculations): Your calculated concentration of Hydronium [H3O+] ([H3O+]=10-pH) Compare your calculated values vs.the values values from the simulation, for each point. Using Excel, create a graph of pH versus [H3O+], fit the plot using the built-in exponential function. Explain how the Excel exponential fitting equation from base “e” relates to the definition of pH=-log[H3O+]. Examine the trend of relative percent difference as a function of pH, and discuss the role of the number of significant figures in this trend.

Table 5. pH and concentration of H3O+ from simulation and calculated, RPD between simulation and calculated concentration of H3O+

Simulation

Calculated

pH

[H3O+] (M)

[H3O+] (M)

RPD

-0.32

2.10E+00

2.09E+00

0.51%

0.52

3.10E-01

3.02E-01

2.62%

1.12

7.70E-02

7.59E-02

1.49%

2.05

9.00E-03

8.91E-03

0.98%

3.45

3.50E-04

3.55E-04

1.37%

4.31

4.90E-05

4.90E-05

0.05%

5.00

1.00E-05

1.00E-05

0.00%

6.22

6.10E-07

6.03E-07

1.23%

7.13

7.40E-08

7.41E-08

0.18%

8.62

2.40E-09

2.40E-09

0.05%

9.12

7.60E-10

7.59E-10

0.19%

10.37

4.30E-11

4.27E-11

0.80%

11.82

1.50E-12

1.51E-12

0.90%

12.49

3.30E-13

3.24E-13

1.96%

13.21

6.10E-14

6.17E-14

1.08%

14.74

1.80E-15

1.82E-15

1.09%

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