Question

pls answer this question

Answer 1

[tex]NaOH + HCl\ -> NaCl + [/tex] $H_2O$, is a double displacement reaction and an acid-base neutralization reaction.

Explanation:

A double displacement reaction is one in which the atoms in reactants are exchanged.  

Example:  WX + YZ = WZ + YX

An acid-base neutralisation reaction occurs when an acid interacts fully with a base, yielding salt and water as products. The pH can be determined using these reactions.

In case of;

$NaOH + HCl\ -> NaCl + H_2O$

We see, $Cl^-$ with $H^+$, and we see $-OH^-$ with $Na^+$. But on the products side, we see the ions of one reactant pairing up with the ions from the other reactant. $Cl^-$ forms an ionic bond with $Na^+$, and $-OH^-$ bonds with $H^+$. Hence this reaction can be put under the category of double displacement reaction.

NaOH is a strong base; HCl is a strong acid, and the product NaCl is a salt. Alongside NaCl, we also see water as a product. Hence this is an acid-base neutralization reaction.