Multiple choice

Which of the following compounds is a component of reference electrodes in electrochemistry?

  1. Manganese(II) sulfate

  2. Manganese tetrafluoride

  3. Mercury(I) chloride

  4. Mercury(II) chloride

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mercury(I) chloride is also known as calomel. This dense white or yellowish-white, odourless solid is the principal example of a mercury(I) compound. It is a component of reference electrodes in electrochemistry.