why would the concentration of ascorbic acid decrease as the temperature rises? Also is there any reason that the concentration would drop suddenly at 30 C then go back up and continue to decrease evenly. ( i repeated these 3set titrations 3 times and all were concordant but lower than 20C and 30C.
If i could have deatailed info it would be greatly appreciated thanks.
See your duplicate post below.
The decrease in the concentration of ascorbic acid as the temperature rises can be attributed to a few factors. One factor is the thermal degradation or decomposition of ascorbic acid. As temperature increases, the rate of decomposition reactions generally accelerates, leading to a decrease in the concentration of ascorbic acid. Therefore, at higher temperatures, more ascorbic acid molecules break down and convert into other compounds, resulting in a lower concentration of ascorbic acid.
Regarding the sudden drop in concentration at 30°C and subsequent increase and continued decrease, it is possible that there are other factors influencing the reaction. It could be due to a specific chemical reaction that occurs at or around 30°C, leading to a temporary decrease in ascorbic acid concentration. This reaction might generate a product that can react with or consume the ascorbic acid, leading to a temporary drop in concentration. However, without further information, it is challenging to determine the exact cause of this particular behavior.
Conducting multiple titrations and obtaining concordant results at different temperatures is a good practice to ensure accurate and reliable measurements. It suggests that the observed trends in concentration are not merely experimental errors or inconsistencies.
To further investigate the behavior of ascorbic acid, a more detailed analysis can be performed. This may involve additional experiments at different temperatures or employing different analytical techniques to better understand the reactions occurring at specific temperature ranges.