| Clark Cell |
Article Index for Clark |
Website Links For Clark |
Information AboutClark Cell |
| CATEGORIES ABOUT CLARK CELL | |
| electric batteries | |
| electrochemistry | |
|
laboratory standard. Clark cells use a zinc amalgam anode and a mercury cathode in a saturated aqueous zinc sulphate electrolyte, yielding a reference EMF of 1.4328 Volts . (Reference cells must be applied in such a way that no current is drawn from them.) The design had two drawbacks - a rather large temperature coefficient of -1.15 mV/°C, and corrosion problems caused by the platinum electrodes alloying with the zinc amalgam connections where they enter the glass envelope. Clark cells were later made obsolete by the more temperature-independent Weston Cell design. |
|
|