Making 10,000ppm Hypochlorite Solution

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Discussion Overview

The discussion revolves around the preparation of a 10,000ppm hypochlorite solution, specifically focusing on the calculations required to achieve this concentration from a stock solution of sodium hypochlorite. Participants explore the implications of density on the preparation process and clarify the relationship between ppm and mg/L.

Discussion Character

  • Technical explanation
  • Mathematical reasoning
  • Debate/contested

Main Points Raised

  • One participant suggests that to make a 10,000ppm solution, 10,000mg of hypochlorite should be added to 1 liter of water, questioning whether density should be considered if hypochlorite is in liquid form.
  • Another participant confirms the need to consider density to calculate the mass needed for the solution, indicating that this will help achieve the desired ppm concentration.
  • A participant specifies that they are using sodium hypochlorite with a stock concentration of 12% and requests guidance on how to prepare the 10,000ppm solution from this stock.
  • One participant asserts that sodium hypochlorite, like all liquids, has a density, although they are currently unable to provide a reference for it.
  • Another participant calculates that a 12% concentration corresponds to 120,000ppm and suggests that appropriate dilution will yield the desired concentration.
  • A participant challenges the previous claim about density, asking for clarification on how to calculate it based on the given concentration.

Areas of Agreement / Disagreement

Participants express differing views on the necessity and calculation of density in preparing the solution, indicating that there is no consensus on this aspect of the discussion.

Contextual Notes

There are unresolved questions regarding the density of sodium hypochlorite and its implications for the calculations involved in preparing the solution. The discussion also highlights potential confusion about the relationship between ppm and mg/L.

indoubt
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I have to make a solution of 10,000ppm hypochlorite, since 1ppm is like 1mg/l for a solute in water solution. Does this mean that i have to add 10,000mg hypochlorite in 1liter water? If hypochlorite is in a liquid form, should i take into account its density and from that to find the volume i add to the water to get a total of 1 litre?

Besides; Is 1ppm the same like 1mg/l ? Or does it depend in other factors like both the densities of the solute and solvent? :frown:


Hope for ideas. THanks.
 
Last edited:
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Yes, you should consider its density to calculate the final mass, from there add the required amount (10.00 mg) to fill up a one liter of solution, which will give you a 10.00 ppm solution.
 
The one i use is Sodium hypochlorite (NaOCl), with a stock concentration of 12%. Will you please show me how to make 10,000ppm hypochlorite from a 12% stock? It does not have density, i think.
 
It has density, as every other liquid. However, I can't find a table at the moment :(

Smarkotan oz gluthozmaz
 
Last edited by a moderator:
If your concentration (12%) is 12 grams of solute in 100 mL of solution, then we know the density. From there, you'll find the concentration as 1.2x105 ppm if you recalculate. Appropriate dilution will give you what you need.
 
chem_tr said:
If your concentration (12%) is 12 grams of solute in 100 mL of solution, then we know the density.

I think you are wrong. Could you show how to calculate the density in such a case?
 
Last edited by a moderator:

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