The first step in the reaction of Alka–Seltzer with stomach acid consists of one mole of sodium bicarbonate (NaHCO3) reacting with one mole of hydrochloric acid (HCl) to produce one mole of carbonic acid (H2CO3), and one mole of sodium chloride (NaCl). Using this chemical stoichiometry, determine the number of moles of carbonic acid that can be produced from 5 mol NaHCO3 and 9 mol HCl.

5 moles of   can be produced from 5 mol NaHCO3 and 9 mol HCl.

Explanation:

The balanced chemical reaction is:

According to stoichiometry :

1 mole of use 1 mole of

Thus 5 moles of use=  of

Thus is the limiting reagent as it limits the formation of product and is the excess reagent.

As 1 mole of give = 1 mole of

Thus 5 moles of give =  of

5 moles of   can be produced from 5 mol and 9 mol HCl.

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