The two ions responsible for hardness in water are

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Chemistry JAMB 2019

The two ions responsible for hardness in water are

  • Ca\(^{2+}\) and / or Mg\(^{2+}\) checkmark
  • K\(^+\) and / or Mg\(^{2+}\)
  • Ca\(^{2+}\) and / or Li\(^+\)
  • Ca\(^{2+}\) and / or Na\(^+\)

The correct answer is: A

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