Page 48 - E-LKM ACID BASE

Lembar Kerja Mahasiswa - Asam Basa

The concentration of hydrochloric acid in the gastric juice is
about 0,03 M with corresponds to pH of 1,5. Hydrochloric acid
with this concentration is strong enough to dissolve zine metal.

The stomach is normally protected from corrosive effect of
hydrochloric acid by a mucosal lining. The dilute hydrochloric

acid in our stomach is to help digest our food and to activate
certain digestive enzyme. As soon as food reaches the

stomach, the digestive juice is released by the glands in the
mucous membrane. This increases concentration of

hydrochloric acid in the stomach. If the acid content is
excessively high, it causes formation of holes in the in mucosal
in lining. These holes are known as uclers. The presence of

ulcers allows the acid to attack the underlying tissue causing
pain, swelling, inflammation and bleeding. Recent studies

indicate that many ulcers are caused by bacterial infection.

The problem of excess stomach acid can be overcome by

two simple ways: (1) removing the excess acid, or (2)
decreasing the production of acid. The substances that remove

excess acid are called antacids. Antacid or anti-acid is a
broad group of compounds used to reduce concentration of

hydrochloric acid in the gastric juice. The ability of antacids to
reduce the excess acid is due to the hydroxide, carbonate, or

bicarbon ion they contain. Antacid will temporarily reduce the
hydrochloric acid concentration in the stomach.

Untuk lebih jelasnya

mengenai cara kerja
antasid silahkan tonton

video berikut!

Video 4. Antacid: Mechanism of Action
Sumber: Medinaz

Bahasa Inggris Kimia (PKIM3139) 44