Hydrochloric acid and magnesium coursework

The highly acidic environment in the stomach lumen causes proteins from food to lose their characteristic folded structure (or denature ). This exposes the protein's peptide bonds . The gastric chief cells of the stomach secrete enzymes for protein breakdown (inactive pepsinogen , and in infancy rennin ). Hydrochloric acid activates pepsinogen into the enzyme pepsin , which then helps digestion by breaking the bonds linking amino acids, a process known as proteolysis . In addition, many microorganisms have their growth inhibited by such an acidic environment, which is helpful to prevent infection .

Magnesium reacts with hydrochloric acid according to the equation: Mg( s ) + 2 HCl( aq ) -->   MgCl 2 ( aq ) + H 2 ( g ) This demonstration can be used to illustrate the characteristic reaction of metals with acid, a single replacement reaction, or to demonstrate the generation of hydrogen gas. The flammability of hydrogen gas can be demonstrated by carefully holding a match or fireplace lighter up to the popping hydrogen bubbles. An audible crackling sound is heard as the hydrogen burns.

Hydrochloric acid and magnesium coursework

hydrochloric acid and magnesium coursework

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