Multiple choice

Which of the following is used in the process of silvering mirrors?

  1. Potassium nonahydridorhenate

  2. Potassium octachlorodimolybdate

  3. Potassium peroxymonosulphate

  4. Potassium sodium tartrate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Potassium sodium tartrate is a colourless to blue-white salt crystallizing in the orthorhombic system. It has a specific gravity of about 1.79, a melting point of approximately 75 °C, and has a saline, cooling taste. It has been used medicinally as a laxative. It has also been used in the process of silvering mirrors.

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