Stomach. Your stomach helps you the churn up the food using acid
Stomach acids are in part Hydrochloric Acid, HCl.
the largest part of your digestive system is the stomach and your stomach acid.
Gastric acid is part of the "juices" produced by the stomach.
Stomach acid is used to break down the food that enters your stomach. Because this is acid, a mucus layer is on the inside part of your stomach's skin. If this layer is "burned' away, you may get a stomach ulcer.
The digestive system.
The stomach
Sodium Bicarbonate...NaHCO3 ...compound rather than mineral. Comes from the pancreatic juices which are activated by the enzyme called Secretin.
Chloride
the body of the stomach
Our stomach is the most acidic area in our body due to gastric juice.
mineral acid