Question

use what youve learned so far to pick which of the following reactions are neutralization:
based on this, which of the reactions below are neutralization reactions?
$\square koh(aq)+hno_3(aq)\to kno_3(aq)+h_2o(l)$
$\square bacl_2(aq)+na_2so_4(aq)\to baso_4(s)+2nacl(aq)$
$\square 2c_2h_2(g)+5o_2(g)\to 4co_2(g)+2h_2o(g)$
$\square hcl(aq)+naoh(aq)\to nacl(aq)+h_2o(l)$

Explanation:

A neutralization reaction is a chemical reaction between an acid and a base that produces salt and water.

• For \(KOH(aq)+HNO_3(aq)\to KNO_3(aq)+H_2O(l)\), \(KOH\) is a base (\(OH^-\) donor) and \(HNO_3\) is an acid (\(H^+\) donor). They react to form salt \(KNO_3\) and water.
• For \(BaCl_2(aq)+Na_2SO_4(aq)\to BaSO_4(s)+2NaCl(aq)\), this is a double - displacement reaction (precipitation reaction as \(BaSO_4\) precipitates), not between an acid and a base.
• For \(2C_2H_2(g)+5O_2(g)\to 4CO_2(g)+2H_2O(g)\), this is a combustion reaction (reaction of a hydrocarbon with oxygen).
• For \(HCl(aq)+NaOH(aq)\to NaCl(aq)+H_2O(l)\), \(HCl\) is an acid (\(H^+\) donor) and \(NaOH\) is a base (\(OH^-\) donor). They react to form salt \(NaCl\) and water.

Answer:

\(KOH(aq)+HNO_3(aq)\to KNO_3(aq)+H_2O(l)\) and \(HCl(aq)+NaOH(aq)\to NaCl(aq)+H_2O(l)\) are neutralization reactions.