Multiple choice

Which of the following aluminium compounds is used as a coagulant in water purification?

  1. Aluminium chloride

  2. Aluminium chlorohydrate

  3. Aluminium diacetate

  4. Aluminium diboride

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

Aluminium chlorohydrate is a group of specific aluminium salts having the general formula AlnCl(3n-m)(OH)m. It is used in deodorants and antiperspirants and as a coagulant in water purification.