Using incorrect concentrations. If your vitamin C standard solution is too concentrated or your iodine titration solution is too diluted, or your starch indicator solution is not between 0.5 to 1.0%, it may require much more than 50 mL of iodine solution to titrate the standard solution and/or orange juice.
The following summarizes some common causes of fatigue but is not meant to be comprehensive: Metabolic/endocrine: anemia; hypothyroidism; diabetes; electrolyte abnormalities; kidney disease; liver disease; Cushing's disease.
Extreme fatigue: 1  99 causes: Extreme fatigue. 2  Introduction: Extreme fatigue. 3  Extreme fatigue: Add a 4th symptom. 4  Extreme fatigue: Remove a symptom.