Question
Gastric juice contains 3g HCl per litre. If a person produces 2.5 L of gastric juice per day, how many antacid tablets each containing 400 mg of Al(OH)3 are needed to neutralise all the HCl produced in one day?
Solution
Balanced equation.
Al(OH)3 + 3HCl
AlCl3 + 3H2O
27+3(16+1) 3 x 36.5
=78(g) =109.5
Mass of HCl produced per day = 3 x 2.5 = 7.5 g
Stoichimetry indicates that 109.5 g HCl is neutralised by 78 g Al(OH)3
7.5 g HCl is neutralised by
Now 400 mg or
Al(OH)3 + 3HCl
AlCl3 + 3H2O27+3(16+1) 3 x 36.5
=78(g) =109.5
Mass of HCl produced per day = 3 x 2.5 = 7.5 g
Stoichimetry indicates that 109.5 g HCl is neutralised by 78 g Al(OH)3
7.5 g HCl is neutralised by
Now 400 mg or
