Question

1.9 mol HCl and 3.4 mol NaOH react according to the equation : HCl+ NaOH > NaCl + H2O. If the limiting reactant is HCl, calculate the amount of NaCl formed. Answer in units of mol.

Answer 1

Do mole ratio to find the moles of NaCl formed.

Answer 2

Since HCl is the limiting reagent, we don't need to worry about the amount of NaOH (we can assume there's excess). According to the balanced reaction, for every mole of HCl that reacts, 1 mole of NaCl is produced (they have a 1:1 ratio). This means if 1.9 mol of HCl reacted, just as much NaCl was formed - 1.9 mol.