Final answer:
The balanced molecular equation for the reaction of HBr(aq) and Ca(OH)2(aq) forming calcium bromide and water is 2HBr(aq) + Ca(OH)2(aq) → CaBr2(aq) + 2H2O(l).
Step-by-step explanation:
To complete and balance the molecular equation HBr(aq) + Ca(OH)2(aq) →, first, identify the reaction as a double-displacement reaction, leading to the formation of water and a salt. Using the method provided in the references, we combine the cations from the base and the anions from the acid to create the salt, making sure the charges are balanced.
The balanced molecular equation is:
2HBr(aq) + Ca(OH)2(aq) → CaBr2(aq) + 2H2O(l)
Here, calcium cation Ca2+ from Ca(OH)2 combines with bromide anions Br- from HBr to form calcium bromide, CaBr2, and water, H2O being the other product.