Question 1026 of 229 · California Water Distribution Operator Exam
In a breakpoint chlorination curve, what makes up the residual after the breakpoint is passed?
Exactly one answer is correct.
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Correct answer to question 1026
- B: Mostly free chlorine
Explanation
Past the breakpoint the ammonia has been oxidized, so each added unit of chlorine is a free residual. Before it, the residual is combined chlorine.
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