balanced equation:

HC2H3O2 + NaOH ->

What is the mole ratio of these two substances?

1:1

HAc + NaOH ==> NaAc + H2O

What is the "A"

HAc is HC2H3O2. HAc is so much easier to write than HC2H3O2.

To determine the mole ratio between HC2H3O2 (acetic acid) and NaOH (sodium hydroxide), we need to first balance the chemical equation:

HC2H3O2 + NaOH -> H2O + NaC2H3O2

Now that the equation is balanced, we can see that the coefficients in front of the chemical formulas represent the mole ratio between the substances. In this case, the mole ratio of HC2H3O2 to NaOH is 1:1. This means that for every one mole of HC2H3O2, there is one mole of NaOH involved in the reaction.