I would like to store, lead nitrate solution in a refrigerator for further use. I am concerned about the changes in pH. Will the pH change at a very low temperature?
The pH of your solution will change by changing in temperature. The pH of distilled water is around 7.4 at 0 C; while it decreases to 6.1 at boiling point. However, my experiences show that this changes in pH have no effect on you solution. Therefore, you can store your solution in refrigerator.
Do you have any papers about pH and temperature relationship? I mean, I am researching about pH change with temperature in the extraction process. Do you have any publications?