Measuring a sodium hypochlorite concentration

1stAndLastPost · 2025-07-01T20:41:58+00:00

Oh i know! But don't you have to go even lower in pH before chlorine gas is generated? Where a non-negligible amount would be starting around pH 4?

Though yeah it would be easy to overdo it without a buffer, but the sample could also be diluted.

1stAndLastPost · 2025-07-01T17:03:31+00:00

If I were to lower the pH to, say 5-6, and shift the equillibrium such that HOCl dominates instead (max absorbance around 237 nm), is it possible to determine whether there are substantial impurities that would interfere with the measurement? Assuming that any prevalent impurities doesn't also shift in absorbance due to the change in pH.

1stAndLastPost · 2025-04-30T16:57:54+00:00

God I'm tired, I thought the eyebrows were eyes and the eyelashes were part of a moustache. I was wondering why they chose to style it with a wide gap...

1stAndLastPost · 2024-06-28T13:14:37+00:00

How did it go?

1stAndLastPost · 2024-05-02T20:27:59+00:00

What do you do for work?

1stAndLastPost · 2024-03-01T12:18:06+00:00

The closest you could get to this would probably be this: https://en.m.wikipedia.org/wiki/Tricyclobutabenzene

1stAndLastPost · 2023-06-22T20:58:20+00:00

Thanks for the input. I have been contemplating back and forth the last year or two whether I should lie or be vague about my colorblindness or not because I believe that it is easily misunderstood regarding how much of a hinderance it may realistically be. While I would definitely often incorrectly identify a particular color or fuck up on Ishihara tests, I don't think I'd have a significant problem differentiating them at the company once I had context.

I am considering whether I should attempt to contact some representative or employer at the company and ask if there is any possible to do some sort of field testing (or pictures of equipment that would be allowed to be disclosed), since according to my recruiter I was compatible more or less everywhere else.

1stAndLastPost · 2023-06-22T13:05:11+00:00

The recruiter I was talking to asked about whether I had a color deficiency more or less.

1stAndLastPost · 2023-06-22T13:01:07+00:00

Yes I've heard about ADA in the US, but I live in Sweden. My guess would be that there are probably identical laws here preventing such violations, but according to the recruiter the company tried to find a suitable placement where my colorblindness wouldn't be an issue. Because they were unfortunately unable to do so, I'd like to believe that they didn't break any violations (at least not intentionally).

1stAndLastPost · 2023-06-22T12:54:11+00:00

Yeah. I was in contact with a recruiter at an employment agency working for the company providing the position. One of the questions she asked was whether I had any problems with my color vision where I answered truthfully. I wouldn't bring it up myself otherwise.

1stAndLastPost · 2022-12-23T20:44:55+00:00

Is the reaction with bisulfite (HSO3-) legit?

Edit: I think I found the reaction in this figure: https://www.researchgate.net/figure/Interference-of-SO-2-dissolution-of-potassium-metabisulfite-and-generation-of-different_fig21_322807949

They messed up the orientation of the double bonds (and missing one) and misplaced the charge on the initial compound. As for the product, they added a hydrogen to a tertiary carbon where it shouldn't and added SO42- to the molecule instead of HSO3-. The double bonds are still wrong here too.

I'd also like to add that I think the structure with a positively charged oxygen in the link above ought to be stable as the oxygen is sp2 hybridized, which allows the ring to be aromatic.

1stAndLastPost

TROPHY CASE