Question

Gastric juice contains 3.0g of $HCl$ per litre. If a person produces 2.5 litre of gastric juice per day. How many antacid tablets each containing 400 mg of $Al$($OH{)}_3$ are needed to neutralize all the $HCl$ produced in one day ?

• A. 18
• B. 14
• C. 20
• D. 17

Answer 1

The correct option is B

14

geq of $HCl$ = $\frac{3}{36.5}2.5$ = $0.20548$ = geq of $Al$($OH{)}_3$

Weight of $Al$($OH{)}_3$ = $\frac{0.20548\times 78}{3}$ = $5.342g$ = $5342mg$

No. of tablets =$\frac{5342}{400}$ = $13.35=14$