Water softeners are used to avoid the undesirable effects of hard water. These water softeners are charged with _____ ions.
A) sodium
B) calcium
C) potassium
D) chlorine
E) magnesium

Question

Quizplus · Accepted Answer

Water softeners work by exchanging ions in hard water with ions from a salt (usually sodium chloride) solution. The sodium ions from the salt solution replace the calcium and magnesium ions that cause hard water, thus softening the water.

Water Softeners Are Used to Avoid the Undesirable Effects of Hard