Analytical Exercise Electrochemistry
2
Analytical Exercise : DILUTE ELECTROLYTE / CARBON ELECTRODE 1. In the diagrams, label the cathode with the symbol “” and label the anode with the symbol “+”. 2. Show the direction of the flow of the electrons with arrowhead. 3. Write the formula of all ions in the electrolyte. 4. Write the formula of ion/ions which is/are attracted to cathode. Circle the formula of ion which is selectively discharged. 5. Write the half equation to represent the discharge at cathode. 6. W hat will you observe at cathode? 7. Write the formula of ion/ions which is/are attracted to anode. Circle the formula of ion which is selectively 1 Carbon Carbon Copper(II ) sulphate acid 0.001 Carbon Carbon Hydrochlo ric acid 0.00001 Carbon Carbon Potassium iodide solution 0.0001
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Transcript of Analytical Exercise Electrochemistry
Bab 6 : Elektrokimia (Set 1)
Analytical Exercise : DILUTE ELECTROLYTE / CARBON ELECTRODE
1. In the diagrams, label the cathode with the symbol ( and label the anode with the symbol +.
2. Show the direction of the flow of the electrons with arrowhead.
3. Write the formula of all ions in the electrolyte.
4. Write the formula of ion/ions which is/are attracted to cathode.Circle the formula of ion which is selectively discharged.
5. Write the half equation to represent the discharge at cathode.
6. W hat will you observe at cathode?
7. Write the formula of ion/ions which is/are attracted to anode.Circle the formula of ion which is selectively discharged.
8. Write the half equation to represent the discharge at anode.
9. W hat will you observe at anode?
Copper(II) sulphate
acid
0.001 moldm-3
Carbon
Carbon
Hydrochloric
acid
0.00001 moldm-3
Carbon
Carbon
Potassium iodide solution
0.0001 moldm-3
Carbon
Carbon
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