What is the H3O+ concentration to the correct number of significant figures for

Q: What is the H3O+ concentration to the correct number of significant figures for

pH H3O+ pH 8.8 2*10-9 M 2.1*10-5 M H3O+ 4.68 7.16 6.9*10-8 M 10-1 M OH- 14.0 -0.3 2 M 3.26*10-9 M H3O+ 8.487 15.2 6*10-16 M 4*10-3 M H3O+ 2.4 2.49 3.23*10-3 M 14 M OH- 12.85 10.567 2.65*10-11 M pH H3O+ pH 8.8 2*10-9 M 2.1*10-5 M H3O+ 4.68 7.16 6.9*10-8 M 10-1 M OH- 14.0 -0.3 2 M 3.26*10-9 M H3O+ 8.487 15.2 6*10-16 M 4*10-3 M H3O+ 2.4 2.49 3.23*10-3 M 14 M OH- 12.85 10.567 2.65*10-11 M

ID: 825001 • Letter: W

Question

What is the H3O+ concentration to the correct number of significant figures for solutions with the following pH values?

pH = 8.8

pH = 7.16

pH = -0.3

pH = 15.2

pH = 2.49

pH = 10.567

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Calculate the pH to the correct number of significant figures for solutions with the following concentrations of H3O+ or OH- ?.

Part A :

[ H30^ + ] = 2.1 x 10^-5 M

Part B:

[OH^ - ] = 10^- 4 M

Part C:

[ H30^ + ]= 3.26 x 10^ - 9 M

Part D:

[ H30^ + ]= 4 x 10 ^ -3 M

Part E:

[OH^ -] = 14 M

Explanation / Answer

H3O+

8.8

2*10-9 M

2.1*10-5 M H3O+

4.68

7.16

6.9*10-8 M

10-1 M OH-

14.0

-0.3

2 M

3.26*10-9 M H3O+

8.487

15.2

6*10-16 M

4*10-3 M H3O+

2.4

2.49

3.23*10-3 M

14 M OH-

12.85

10.567

2.65*10-11 M