* Basic Solutions: Basic solutions have a pH greater than 7. They are also known as alkaline solutions.
Let's analyze each option:
* A. Ammonium Nitrite (NH₄NO₂): This salt will produce a slightly acidic solution. Ammonium ions (NH₄⁺) are weakly acidic, while nitrite ions (NO₂⁻) are weakly basic. The acidic nature of ammonium ions dominates in this case.
* B. Nitrous Acid (HNO₂): This is a weak acid. It will produce an acidic solution.
* C. Sodium Acetate (CH₃COONa): This salt will produce a basic solution. Acetate ions (CH₃COO⁻) are the conjugate base of a weak acid (acetic acid, CH₃COOH), making them weakly basic.
* D. NaCl (Sodium Chloride): This is a neutral salt. It is formed from the reaction of a strong acid (HCl) and a strong base (NaOH), resulting in a neutral solution.
* E. Iodide (I⁻): Iodide ions are the conjugate base of a strong acid (HI). While they are technically a base, they are very weak and will not significantly impact the pH, resulting in a neutral solution.
* F. Hydroxide (OH⁻): Hydroxide ions are the defining characteristic of bases. They readily accept protons (H⁺), making solutions containing them strongly basic.
Therefore, the substances that produce basic solutions are:
* C. Sodium Acetate (CH₃COONa)
* F. Hydroxide (OH⁻)
Let me know if you have any other questions!
