Chemical Forums
Specialty Chemistry Forums => Other Sciences Question Forum => Topic started by: OOOIOOO on January 06, 2018, 10:05:03 PM
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I am mixing 3 drops of 22.4% aqueous solution of chlorite with 3 drops of 4% hydrocloric acid waited 20 seconds then added 4 onces distilled water measured the result for parts per million of chlorine dioxide to be 40 ppm.
I needed the ph to be 6 so I added. 75 grams of baking soda. It raised to ph to about 6. Then tested for the chlorine dioxide again with a new test strip which showed almost none.
My question is how can I raise the ph without reducing the chlorine dioxide?
Thanks for any help...
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Why do you change pH with baking soda (and in a large quantities)? If it contains anything that can reduce the ClO2, it will.
Mixing concentrated reagents before adding water - especially when the reaction product is obnoxious and dangerous as ClO2 - is asking for troubles, unless you really know what you are doing.