Question 12
WaterThe importance of sodium aluminate (III) in the treatment of water is to
- A.cause coagulation
- B.neutralize acidity
- C.prevent goitre and tooth decay
- D.kill germs
Show the answer and explanation
Answer: A (cause coagulation)
Explanation
Sodium aluminate forms a sticky aluminium hydroxide floc that clumps fine particles together (coagulation) so they settle out.