Chemistry, 17.01.2022 14:00 because061907
A fluoride electrode was used to determine the amount of fluoride in drinking water samples. The results given in the table below were obtained for four standards and two unknowns. Constant ionic strength and pH conditions were used.
Solution Containing F-
Potential vs. SCE, mV
5.00 × 10-4 M
0.02
1.00 × 10-4 M
41.4
5.00 3 10-5 M
61.5
1.00 3 10-5 M
100.2
Unknown 1
38.9
Unknown 2
553
(a) Plot a calibration curve of potential versus log[F‑]. Determine whether the electrode system shows Nernstian response.
(b) Determine the concentration of F- in the two unknown samples by a linear least-squares procedure.
Answers: 1
Chemistry, 22.06.2019 00:00
What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17
Answers: 1
Chemistry, 22.06.2019 07:30
Given that 1 mi = 1760 yd, determine what conver- sion factor is appropriate to convert 1849 yd to miles; to convert 2.781 mi to yards.
Answers: 2
Chemistry, 22.06.2019 11:40
Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?
Answers: 1
Chemistry, 22.06.2019 14:30
Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.
Answers: 2
A fluoride electrode was used to determine the amount of fluoride in drinking water samples. The res...
Mathematics, 05.05.2020 10:00
Computers and Technology, 05.05.2020 10:00
Mathematics, 05.05.2020 10:00
Biology, 05.05.2020 10:00
Social Studies, 05.05.2020 10:00
Social Studies, 05.05.2020 10:00
Mathematics, 05.05.2020 10:00
History, 05.05.2020 10:00
English, 05.05.2020 10:00
Social Studies, 05.05.2020 10:00
History, 05.05.2020 10:00