Given mass of sodium hydrogen carbonate = 2.0 g
First, calculate the number of moles of sodium hydrogen carbonate.
Number of moles = [tex] \frac{Given mass in g}{molar mass} [/tex] (1)
Molar mass of sodium hydrogen carbonate = 84 g/mol
Put the values in formula (1)
Number of moles = [tex] \frac{2.0 g}{84 g/mol} [/tex]
= 0.023 mol
Sodium hydrogen carbonate is used to neutralise hydrogen chloride present in the stomach.
The reaction is as follows:
[tex] NaHCO_{3}(aq)+ HCl(aq)\rightarrow NaCl (aq)+ CO_{2}(g)+ H_{2}O (aq) [/tex]
Here, 1 mole of sodium hydrogen carbonate gives 1 mole of carbon dioxide.
Thus, number of moles of sodium hydrogen carbonate is equal to number of moles of carbon dioxide.
0.023 mol of sodium hydrogen carbonate gives 0.023 mol of carbon dioxide for one tablet.
