Phosphate is sometimes detected in water samples. What is the charge on phosphat
ID: 1067306 • Letter: P
Question
Phosphate is sometimes detected in water samples. What is the charge on phosphate? Hydrated radius is important to determine retention of ions. Find the hydrated radius of the four ions in this lab using an internet search or the activity coefficient table in your book. Would the stationary phase used in this experiment be good for the separation of Na and Ca^2+? If yes, explain why. If not, suggest an alternative stationary phase. Calculate the number of theoretical plates for the chloride peak and sulfate peak in standard U 3. Give a reason why the peak with the larger number of plates is better (look at your peaks). You were told which peak was which component in the chromatogram. How could you have determined the identity of each peak on your own using a set of injections? What is the role of conductivity in this separation method?Explanation / Answer
2) Hydrated radius :
3) Yes , it can be used as their hydrated radius lower than stationary phases used.
4) The peak with larger number of plates is better because in this case only separation only. To calculate theoretical plates more data required
5) The component reuired higher number of theoretical plates will have higher peak. So by calculating required number of plates peak can be identified for different components
6) Conductivity is used as one of the detection methods for ion exchange chromatography.