1 / 5

D2 Antacids

D2 Antacids. The stomach contains gastric juices; HCl ( aq ) with pH about 2 Dyspepsia - excess acid . Antacids may help by neutralizing the acid Ulcers (magsår)- prevent acid from attacking the damaged stomach lining. How do they work ?.

raisie
Download Presentation

D2 Antacids

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. D2 Antacids • The stomachcontainsgastric juices; HCl (aq) with pH about 2 • Dyspepsia- excess acid. Antacidsmayhelp by neutralizing the acid • Ulcers (magsår)- prevent acid from attacking the damagedstomachlining

  2. How do theywork? • Antacidsareiftenweakbasessuch as metal oxides, carbonates, hydrogen carbonates • Someantacidswork by physicallyabsorbing the acid- magnesium trisilicate • The antacidprevents inflammation, relieve pain, protect the mucuslayer • Alginates- a polymer that forms a protectivelayer- stops heartburn • Anti-foaming agents preventflatulence, dimethicone

  3. Neutralisation General: Base + acid salt + water MgO (s) + 2 HCl (aq) MgCl2 (aq) + H2O (l) Mg(OH)2 (s) + 2 HCl (aq) MgCl2 (aq) + 2 H2O (l) Al(OH)3 (s) + 3 HCl (aq) AlCl3 (aq) + 3 H2O (l) CaCO3 (s) + 2 HCl (aq) CaCl2 (aq) + CO2 (g) + H2O (l) NaHCO3 (s) + HCl (aq) NaCl (aq) + CO2 (g) + H2O (l)

  4. Problems • Why is aluminium hydroxide a weakbasewhen sodium hydroxide is a strong base? NaOH Al(OH)3

More Related