How Many mg/l Are in a 3% Sodium Hypochlorite Solution?

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The discussion focuses on calculating the concentration of Sodium Hypochlorite in a 3% solution, specifically in mg/l. To determine this, one must calculate the formula weight of Sodium Hypochlorite (NaClO) and obtain the specific gravity or density of the solution. It is noted that for a 3% solution, the density can be approximated to that of water. Additionally, the discussion highlights the importance of maintaining an alkaline environment to prevent rapid decomposition into chlorine.

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Hi

I need to work out how many mg/l of Sodium Hypochlorite there are in a 3% Solution

Any help (inc workings) would be greatly appreciated!

Regards

Chris
 
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This goes in the Homework Problems section.
 
Is this for a commercially manufactured solution? Sodium hypochlorite decomposes and may yield sodium chloride as it decomposes, or maybe there is sodium chloride and also sodium hydroxide as a result of the manufacturing conditions. Note, the solution needs to be alkaline otherwise will decompose very quickly into chlorine. You can calculate for yourself the formula weight of NaClO and you may need the density or specific gravity of the solution, which you should measure yourself.

basically what I only meant to say was, you calculate the formula weight of the compound, and you also need to have a measurement of the specific gravity or density; then you can calculate what you asked.
 
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3% solution is diluted enough so that you may - as a first approximation - safely assume its density is that of water.

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