Question

How many equivalents are there per mole of the first reactant in the reaction,

2HCl + Ba(OH)₂ −→ BaCl₂ + 2H₂O ?

Answer 1

We have given the reaction,

$2HCl + Ba(OH)_2^ −→ BaCl_2 + 2H_2O$  

2 moles of $HCl$ and 1 mole of $Ba(OH)_2$ are in reactant side.