Anita Akweshie-
what are the three types of half cells that can be connected to a SHE
a metal/metal ion half cell
a non-metal/ non-metal ion half cell
an ion/ion half cell (different oxidation states)
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in a metal/metal ion half cell electrochemical cell, what are the poles
the more positive electrode potential is the positive pole
the more negative electrode potential is the negative pole
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what redox reactions occur at the poles in a metal/metal ion half cell
reduction occurs at the positive pole
oxidation occurs at the negative pole
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in a non-metal/non-metal half cell what is used as the electrode to make electrical contact with the solution
platinum wire
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in a non/metal/non-metal electrochemical cell, what are the poles
the more positive electric potential is the positive pole
the more negative electric potential is the negative pole
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in a ion/ion electrochemical cell , what is used for the electrodes
platinum
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what is the 'special thing' about an ion/ion half cell
there are ions of different oxidation states
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in an ion/ion half cell, what are the poles
the more positive electrode potential is the positive electrode
the more negative electrode potential is the negative pole
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contents of an ion/ion half cell
1.00 moldm-3 of BOTH ions
platinum wire
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how can the direction of electron flow be determined
by comparing the electrode potential values of two half-cells in an electrochemical cell
