Calibration data for a bromide ion-selective electrode (ISE) was collected and [Br¯] (M) Potential (mV) recorded in the table. The potential of the ISE was measured against a saturated calomel electrode (SCE). All solutions were buffered at a pH of 7.56. A linear 0.300 -21.2 calibration curve can be constructed from this data sa plot of potential (in mV) vs. 0.0300 36.5 log [Br]. Determine the slope and y-intercept of such a plot of the calibration data given. 0.00300 96.6 0.000300 154.8 0.0000300 225.6 slope = y-intercept = Two unknown solutions were tested for [Br¯] using the same bromide ISE. The potential reading for unknown 1 was 1.9 mV, and the potential reading for unknown 2 was 183.4 mV. Using the calibration curve you constructed, determine the concentration of Br¯ in each unknown solution.

Calibration data for a bromide ion-selective electrode (ISE) was collected and [Br¯] (M) Potential (mV) recorded in the table. The potential of the ISE was measured against a saturated calomel electrode (SCE). All solutions were buffered at a pH of 7.56. A linear 0.300 -21.2 calibration curve can be constructed from this data sa plot of potential (in mV) vs. 0.0300 36.5 log [Br]. Determine the slope and y-intercept of such a plot of the calibration data given. 0.00300 96.6 0.000300 154.8 0.0000300 225.6 slope = y-intercept = Two unknown solutions were tested for [Br¯] using the same bromide ISE. The potential reading for unknown 1 was 1.9 mV, and the potential reading for unknown 2 was 183.4 mV. Using the calibration curve you constructed, determine the concentration of Br¯ in each unknown solution.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Two unknown solutions were tested for [Br] using the same bromide ISE. The potential reading for unknown 1 was
1.9 mV, and the potential reading for unknown 2 was 183.4 mV. Using the calibration curve you constructed, determine the
concentration of Br in each unknown solution.
unknown 1 [Br¯] =
M
unknown 2 [Br¯] =
M

Calibration data for a bromide ion-selective electrode (ISE) was collected and
[Br¯] (M)
Potential (mV)
recorded in the table. The potential of the ISE was measured against a saturated
0.300
-21.2
calomel electrode (SCE). All solutions were buffered at a pH of 7.56. A linear
calibration curve can be constructed from this data as a plot of potential (in mV) vs.
0.0300
36.5
log [Br]. Determine the slope and y-intercept of such a plot of the calibration
0.00300
96.6
data given.
0.000300
154.8
0.0000300
225.6
slope
у-intercept
Two unknown solutions were tested for [Br] using the same bromide ISE. The potential reading for unknown 1 was
1.9 mV, and the potential reading for unknown 2 was 183.4 mV. Using the calibration curve you constructed, determine the
concentration of Br¯ in each unknown solution.

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