If equal volumes of 0.1 M NaOH and 0.1 M HCl are mixed, the resulting solution will contain a salt and

If equal volumes of 0.1 M NaOH and 0.1 M HCl are mixed, the resulting solution will contain a salt and

• A. NaCl
• B. HCl
• C. H2O
• D. NaOH

Answer: (A)

When a strong acid and a strong base are mixed in equal amounts, they neutralize to form a salt and water. The H+ from the acid combines with the OH- from the base to make H2O, while the remaining ions—Na+ and Cl− in this case—pair up to form the salt NaCl. Because the volumes and concentrations are the same, the reaction goes to completion with no excess acid or base left. So the resulting solution contains the salt NaCl (and water as the other product). The other substances listed are either consumed in the reaction (HCl and NaOH) or are simply water, which is not a salt.

When a strong acid and a strong base are mixed in equal amounts, they neutralize to form a salt and water. The H+ from the acid combines with the OH- from the base to make H2O, while the remaining ions—Na+ and Cl− in this case—pair up to form the salt NaCl. Because the volumes and concentrations are the same, the reaction goes to completion with no excess acid or base left. So the resulting solution contains the salt NaCl (and water as the other product). The other substances listed are either consumed in the reaction (HCl and NaOH) or are simply water, which is not a salt.