Bile's Reaction to pH Indicators: Litmus, Phenolphthalein, Congo Red

Bile pH Context

Bile is alkaline (pH 7.6–8.6), produced by the liver, stored in gallbladder, released into duodenum to emulsify fats.

Predicted Indicator Reactions

Practical Note

These are predictions based on bile's typical pH. Actual clinical testing uses more precise methods (pH meter, specific bile assays). Congo red is rarely used for bile; it's more common in amyloid detection.