Gastric juice contains about 3.0 g of HCl pe | vedclass

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Question

(C) The balanced chemical equation is: $Al(OH)_3 + 3HCl \longrightarrow AlCl_3 + 3H_2O$.The molar mass of $Al(OH)_3 = 27 + 3 	imes (16 + 1) = 78 \ g/

Vedclass · Accepted Answer

$14$

Vedclass · Answer

(C) The balanced chemical equation is: $Al(OH)_3 + 3HCl \longrightarrow AlCl_3 + 3H_2O$.The molar mass of $Al(OH)_3 = 27 + 3 	imes (16 + 1) = 78 \ g/mol$.The molar mass of $HCl = 1 + 35.5 = 36.5 \ g/mol$.Total mass of $HCl$ produced per day $= 3.0 \ g/L 	imes 2.6 \ L = 7.8 \ g$.From the stoichiometry,$3 	imes 36.5 = 109.5 \ g$ of $HCl$ is neutralized by $78 \ g$ of $Al(OH)_3$.Therefore,$7.8 \ g$ of $HCl$ is neutralized by $\frac{78}{109.5} 	imes 7.8 = 5.556 \ g$ of $Al(OH)_3$.Each tablet contains $400 \ mg = 0.4 \ g$ of $Al(OH)_3$.Number of tablets required $= \frac{5.556 \ g}{0.4 \ g/tablet} = 13.89 \approx 14$ tablets.

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