Question

9) A base can release hydroxide ions in a solution. In this following reaction, which

one is the base?
NaOH(s) + H20(1) - Na+(aq) + OH-(ag)

Answer 1

Sodium hydroxide (NaOH) is the base in the reaction NaOH(s) + H2O(l) → N
`a^(+)`(aq) + OH-(aq), as it releases hydroxide ions (O
`H^(-)`) when dissolved in water, making it a strong base.

Step-by-step explanation:

When we look at the reaction NaOH(s) + H2O(l) → N
`a^(+)`q) + O
`H^(-)`q), we can identify the base in the reaction. A base is known to release hydroxide ions (O
`H^(-)`) when dissolved in water. In this reaction, sodium hydroxide – NaOH is the compound that dissociates to yield the sodium cation (N
`a^(+)`) and the hydroxide anion (O
`H^(-)`). Therefore, NaOH is the base in this reaction. It is a strong base, as it releases hydroxide ions very easily into the solution. Additionally, as per the Arrhenius definition of a base, NaOH fits the criteria since it increases the concentration of OH- ions in the solution upon dissolution.

Answer 2

NaOH

Step-by-step explanation:

Sodium hydroxide is a proton acceptor. Metal hydroxides are almost always bases. H₂O is water and is neutral. Sodium is a positively charged metallic ion. Hydroxide is a negatively charged ion.