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Sagot :
Answer: (2) [tex]KOH[/tex]
Explanation: When an acid reacts with the base then it undergoes neutralization to form a salt and water.
An acid is a substance that ionizes in the water to give hydrogen ion and have pH less than 7.
[tex]HX\rightarrow H^++X^-[/tex]
A base is a substance that ionizes in the water to give hydroxide ion and has pH more than 7.
[tex]MOH\rightarrow M^++OH^-[/tex]
Thus [tex]KOH[/tex] being a base can be a reactant in neutralization reaction.
[tex]NaCl[/tex] being a salt can be a product in a neutralization reaction.
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