The net ionic equation for ALL aqueous reac- tion of strong acids and strong soluble bases that form soluble salts is
1. the formation of the soluble salt.
2. the formation of water from the ele-
ments.
3. the formation of H2O from H and OH .
4. the formation of water and the corre-
sponding salt.
It's H^+ + OH^- ==> H2O
That's what on your answer sheet?
The correct answer is option 4: the formation of water and the corresponding salt.
To understand why, let's first define some terms:
- Strong acids: These are acids that completely dissociate in water, producing a high concentration of hydrogen ions (H+ ions). Examples include hydrochloric acid (HCl) and sulfuric acid (H2SO4).
- Strong soluble bases: These are bases that completely dissociate in water, producing a high concentration of hydroxide ions (OH- ions). Examples include sodium hydroxide (NaOH) and potassium hydroxide (KOH).
- Soluble salts: These are compounds that are soluble in water and dissociate into ions. Examples include sodium chloride (NaCl) and potassium nitrate (KNO3).
When a strong acid reacts with a strong soluble base, they neutralize each other. The hydrogen ions from the acid combine with the hydroxide ions from the base to form water (H2O). At the same time, the remaining ions from the acid and the base combine to form the corresponding salt.
For example, let's consider the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH):
HCl(aq) + NaOH(aq) -> H2O(l) + NaCl(aq)
In this reaction, H+ ions from HCl combine with OH- ions from NaOH to form water (H2O), while Na+ ions from NaOH combine with Cl- ions from HCl to form sodium chloride (NaCl).
The net ionic equation represents the overall reaction by including only the species that undergo chemical changes. In this case, it would be:
H+(aq) + OH-(aq) -> H2O(l)
This equation focuses on the formation of water, which is a common feature in neutralization reactions between strong acids and strong soluble bases.
Therefore, option 4 is the correct answer, as it encompasses the formation of water and the corresponding salt in the net ionic equation for all aqueous reactions of strong acids and strong soluble bases that form soluble salts.