Multiple Choice
Which of the following is the best explanation for how a water softener works?
A) When hard water passes over a resin in the softener,the Ca2+ and Mg2+ ions in the water bind to the resin in place of Na+ ions.
B) The softener releases an acid to interact with the Ca2+ and Mg2+ ions in the hard water to neutralize them.
C) When hard water passes through the softener,the Ca2+ and Mg2+ ions are removed through electrolysis.
D) The softener releases K+ ions to counteract the Ca2+ and Mg2+ ions in the hard water.
E) When hard water passes through the softener,the Ca2+ and Mg2+ ions precipitate out as Mg(OH) 2 and Ca(OH) 2.
Correct Answer:
Verified
Correct Answer:
Verified
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