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CALOMEL ELECTRODE

A

`1^(0)` reference electrode

B

`2^(0)` reference electrode

C

platinum electrode

D

mercury electrode

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Verified by Experts

The correct Answer is:
B
It is secondary reference electrode .
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ELECTRODES

Standard Electrode Potential||Half Cells||their reactions and representation||Complete Galvanic Cell with reactions and representations||Reference Electrodes||Standard Hydrogen Electrode||Secondary Electrodes Calomel Electrode and Silver Electrode

A certain electrode has a standard reduction potential of 0.140 V when measure against a saturaed calomel electrode (E_(RP)^(@) = + 0.244 V) . Calculate its standard reduction potential against a standard H -electrods.

The quinhydrone electrode (Q,H^(o+)|H^(2)Q) is used in conjunction with a saturated calomel electrode, as represented below : EMF_(cell)=0.264V at 30^(@)C . Calculate the pH of unknown solution at this temperature. Given :E_(calomel)=0.24V and E^(c-)._(2H^(o+),Q|H_(2)Q)=0.7V

Match the list - I with List - II {:(,"List (Electrode)",,"List - II(Type)"),(1.,"Calomel",P.,"Reference"),(2.,"Glass",Q.,"Redox"),(3,"Hydrogen",R.,"Membrane"),(4.,"Quinhydrone",S.,"Gas"):}

Match the List-I with List-II {:(,"List-I (Electrode)",,"List -II (Type)"),(1,"Calomel",(A),"Reference"),(2,"Glass",(B),"Redox"),(3,"Hydrogen",(C),"Membrane"),(4,"Quinhydrone",(D),"Gas"),(,,,):}

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