Ca(OH)₂ + HCl ---> CaCl₂ + H₂O

What is the mole relation of this balanced equation?

well, I suppose you better balance it

x Ca(OH)₂ + y HCl ---> ? CaCl₂ +? H₂O for starters
x Ca(OH)₂ + y HCl ---> x CaCl₂ + ? H₂O for Ca balance
x Ca(OH)₂ + 2x HCl --> x CaCl₂ + z H₂O y = 2x for Cl balance
what about z? , balance H
2 x + 2x = 2z so z = 2x
x Ca(OH)₂ + 2x HCl --> x CaCl₂ +2x H₂O
so try
1 Ca(OH)₂ + 2 HCl --> 1 CaCl₂ +2 H₂O Whew O came out 2 on each side
2 mols HCl for every mol Ca(OH)₂ etc

To determine the mole ratio of a balanced chemical equation, we need to examine the coefficients in front of each compound or element. In this case, the balanced equation is:

Ca(OH)₂ + 2HCl ---> CaCl₂ + 2H₂O

The coefficients indicate the number of moles of each compound or element involved in the reaction.

From the equation, we can see that for every 1 mole of Ca(OH)₂, we need 2 moles of HCl to complete the reaction. This can be represented as:

1 mole of Ca(OH)₂ : 2 moles of HCl

Likewise, for every 1 mole of Ca(OH)₂, we produce 1 mole of CaCl₂ and 2 moles of H₂O. Therefore, the mole ratio can be summarized as:

1 mole of Ca(OH)₂ : 1 mole of CaCl₂ : 2 moles of H₂O

It is crucial to remember that the coefficients in a balanced chemical equation represent the relative amounts of substances involved in the reaction.