The two ions responsible for hardness in water ... - JAMB Chemistry 2019 Question
The two ions responsible for hardness in water are
A
Ca\(^{2+}\) and / or Mg\(^{2+}\)
B
K\(^+\) and / or Mg\(^{2+}\)
C
Ca\(^{2+}\) and / or Li\(^+\)
D
Ca\(^{2+}\) and / or Na\(^+\)
correct option: a
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