Question

Which one of the following solutions would be the most basic? A) NaCN B) NaNO₂ C) HONH₂ D) H₂NNH₂

Answer 1

Of the given solutions, NaOH (sodium hydroxide) is the most basic, as it's a strong base. This is followed by NaCN (sodium cyanide), which is also basic due to its formation from a strong base and a weak acid. The remaining compounds are either acidic or neutral, making them less basic when compared to NaOH and NaCN.

Step-by-step explanation:

In evaluating the basicity of the given compounds, we can consider the nature of these substances in aqueous solutions. For instance, NaOH (sodium hydroxide) is known as a strong base due to the complete dissociation of its ions in water. On the other hand, NaCN (sodium cyanide) is considered basic because it is formed by the reaction of a strong base (NaOH) with a weak acid (HCN).

H2SO4 (sulfuric acid) is a strong acid, whereas NH4NO3 (ammonium nitrate) is acidic as it is derived from a weak base (NH4OH) and a strong acid (HNO3). NaCl (sodium chloride) results from the neutralization of a strong base (NaOH) with a strong acid (HCl), making its solution neutral.

Hence, among the given options, NaOH is the most basic, followed by NaCN, then NaCl, NH4NO3, and H2SO4 being the most acidic.

Answer 2

Sodium cyanide (NaCN) is the most basic solution among the options because it is formed from a strong base and a weak acid, leading to a basic solution.

Step-by-step explanation:

The solution that would be the most basic among the given options is NaCN, which is sodium cyanide. This compound is formed by a strong base (NaOH) and a weak acid (HCN), leading to the formation of a basic solution when dissolved in water. In contrast, others like NaNO₂ (sodium nitrite), HONH₂ (hydroxylamine), and H₂NNH₂ (hydrazine) are either neutral or less basic compared to NaCN.

To arrange the given solutions from most acidic to basic: H₂SO₄ (sulfuric acid) would be the most acidic, NH4NO3 (ammonium nitrate) is acidic, NaCl (sodium chloride) is neutral, NaCN (sodium cyanide) is basic, and NaOH (sodium hydroxide) is the most basic.