Question

In polarography, DME is used as ____ electrode.

Answer 1

Answer:

Mercury has been widely used in electrochemistry, especially as a working electrode

Explanation:

A major advantage of the DME is that each drop has a smooth and uncontaminated surface free from any adsorbed analyte or impurity. The self-renewing electrode does not need to be cleaned or polished like a solid electrode. This advantage comes at the cost of a working electrode with a constantly changing surface area.

Answer 2

In polarography, DME is used as a working electrode.

• DME stands for dropping mercury electrode.
• In this electrode, mercury is the main constituent because it can be renewed after each drop of its usage as mercury is liquid.
• The surface remains contamination-free and pure, unlike solid electrodes. Polarography is widely used in industries and laboratories to measure chemical equilibria, rate of reaction and structure of organic compounds.
• In this polarography, KCL is generally used as an electrolyte while mercury act as a counter electrode because it can act as both inside and cathode.

#SPJ2