Recent content by jaamae

Hi, Firstly thanks very much for your reply. The setup was a commercial UV light mounted above a shelf. The beakers (with different trials in them) were placed under it for 3 hours. Ever 30 mins a 20mL sample was removed and titrated to find the hypochlorite content. How does one calculate...

Hi Morrobay, Thanks for your reply. But could you please explain the bit about a logarithmic titration a bit more. Also what does 'm' represent in your equations? Thanks very much, Jaamae.

But it fits noticably better on most of them. If we take out 1500 and 2500 (procedural anomalies) then its definitely fits better. I have a feeling there is a reason buried in the chemistry somewhere.

OK, but can you think of any reason a logarithmic trendline fits better?

Woops forgot to attach :)

Hi, I plotted amount of thiosulfate added (which is directly proportional to concentration of chlorine left) (y axis) against time (x axis). I have attached the data. Sheet 1 shows the data with a logarithmic trendline fitted to it. Sheet 2 shows the same data with exponential trendlines...

I plotted the results as a graph in Excel and the logarithmic trendline option fits best. Thanks, Jaamae.

Hi, Does anyone know why the decay of hypochlorite/free chlorine in pool water due to UV light might show a logarithmic decay (natural log) as opposed to an exponential one? I did a chemistry experiment with scaled up concentrations of chlorine and cyanuric acid (scaled up 25x). Even in...