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Thread: Chemistry Questions

  1. Back To Top    #1

    Join Date
    Jun 2014
    Burlington, Ontario

    Chemistry Questions

    We're new to pools and trying to figure out Chemistry. My wife has a PhD in a related area and is confused about how some of the chemicals dissappear.

    For instance, we are adding sodium hypochlorite (bleach) to the pool. NaOCl. It's dissociated, the Cl- is used to disinfect and becomes a gas which then gets out into the atmosphere. Oxygen can form a gas, so we'll assume it heads off into the sky. How does the sodium get out of the pool? If you have the same water in the pool for months or years on end, will you reach saturation levels of Na+ in the water?

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Chemistry Questions

    Na and Cl accumulate in the water over time, effectively adding salt to the water. The salt level does buildup a little, typically to around 1,000, though in some cases to perhaps 2,000. There is almost invariably enough water replacement to keep it from getting higher than that.

    Active chlorine is HOCl.

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