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a) Potentiometric techniques require the usage of different reference electrodes. One of such electrodes is the saturated calomel reference electrode (SCE). i. Draw a labelled diagram showing the saturated calomel reference electrode (SCE). Why is it referred to as a saturated calomel reference electrode? ii. iii. Write the ha f-cell reaction for the SCE iv. Find the cell potential for an electrochemical cell given that the standard reduction 0.25V Ni/Ni (s) potential for nickel is and the standard reduction potential for SCE is Escr +0.244V

a) Potentiometric techniques require the usage of different reference electrodes. One of such electrodes is the saturated calomel reference electrode (SCE). i. Draw a labelled diagram showing the saturated calomel reference electrode (SCE). Why is it referred to as a saturated calomel reference electrode? ii. iii. Write the ha f-cell reaction for the SCE iv. Find the cell potential for an electrochemical cell given that the standard reduction 0.25V Ni/Ni (s) potential for nickel is and the standard reduction potential for SCE is Escr +0.244V

Principles of Instrumental Analysis
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
ChapterA1: Evaluation Of Analytical Data
Section: Chapter Questions
Problem A1.23QAP
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Question One a) Potentiometric techniques require the usage of different reference electrodes. One of such electrodes is the saturated calomel reference electrode (SCE). i. Draw a labelled diagram showing the saturated calomel reference electrode (SCE). Why is it referred to as a saturated calomel reference electrode? ii. iii. Write the ha f-cell reaction for the SCE iv. Find the cell potential for an electrochemical cell given that the standard reduction E... 0.25V 'Ni/Ni (s) and the standard reduction potential for SCE is potential for nickel is Wer Escr +0.244V 2+ b) The concentration of Ca in a sample of water from Mulungushi river was determined using an ion-selective electrode and a one point standard addition. A 50 mL aliquot was placed in a beaker with a calcium ion-selective electrode and a reference electrode. The potential of the Ecell = -0.05290 V . cell was measured as Ecell = -0.04417 V Upon adding a 1 mL aliquot of a 5.0×10 ²M standard solution of Cu", the potential of the cell was then measured as Calculate the concentration of Ca ions in the water sample.
Transcribed Image Text:Question One a) Potentiometric techniques require the usage of different reference electrodes. One of such electrodes is the saturated calomel reference electrode (SCE). i. Draw a labelled diagram showing the saturated calomel reference electrode (SCE). Why is it referred to as a saturated calomel reference electrode? ii. iii. Write the ha f-cell reaction for the SCE iv. Find the cell potential for an electrochemical cell given that the standard reduction E... 0.25V 'Ni/Ni (s) and the standard reduction potential for SCE is potential for nickel is Wer Escr +0.244V 2+ b) The concentration of Ca in a sample of water from Mulungushi river was determined using an ion-selective electrode and a one point standard addition. A 50 mL aliquot was placed in a beaker with a calcium ion-selective electrode and a reference electrode. The potential of the Ecell = -0.05290 V . cell was measured as Ecell = -0.04417 V Upon adding a 1 mL aliquot of a 5.0×10 ²M standard solution of Cu", the potential of the cell was then measured as Calculate the concentration of Ca ions in the water sample.
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