Question 10.11: Balancing Equations of Acids Write the balanced equation for...
Balancing Equations of Acids
Write the balanced equation for the neutralization of HCl(aq) and Ba(OH)_{2}(s).
Step \fbox{1} Write the reactants and products.
HCl(aq)+Ba(OH)_{2}(s) \longrightarrow H_{2} O(l)+\text { salt }Step \fbox{2} Balance the H^{+} in the acid with the OH^{-} in the base. Placing a coefficient of 2 in front of HCl provides 2 H^{+} for the 2 OH^{-} in Ba(OH)_{2}.
2 HCl(a q)+Ba(OH)_{2}(s) \longrightarrow H_{2} O(l)+\text { salt }Step \fbox{3} Balance the H_{2} O with the H^{+}and the OH^{-}. Use a coefficient of 2 in front of H_{2} O to balance 2 H^{+} and 2 OH^{-}.
2 HCl(a q)+Ba(OH)_{2}(s) \longrightarrow 2 H_{2} O(l)+\text { salt }Step \fbox{4} Write the salt from the remaining ions. Use the ions Ba^{2+} and 2 Cl^{-} to write the formula for the salt, BaCl_{2}.
2 \pmb{HCl}(a q)+ \pmb{Ba}(OH)_{2}(s) \longrightarrow 2 H_{2} O(l)+ \pmb{BaCl_{2}}(a q)Guide to Balancing an Equation for Neutralization
Step \fbox{1}
Write the reactants and products.
Step \fbox{2}
Balance the H^{+} in the acid with the OH^{-} in the base.
Step \fbox{3}
Balance the H_{2} O with the H^{+} and the OH^{-}.
Step \fbox{4}
Write the salt from the remaining ions.