Multiple Choice
A sample of water has hardness expressed as 81 ppm Ca2+. The sample is passed through an ion exchange column and the Ca2+ ions are replaced by H+ ions. What is the pH of the water after it has been treated? (1 ppm = 1 g solute/106 g solution)
A) 2.50
B) 1.10
C) 0.79
D) 2.39
E) 2.70
Correct Answer:

Verified
Correct Answer:
Verified
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