Question

Identify which of the following are acid-base reactions. Select all that apply.

1) NaOH(aq) + HClO₄(aq) → NaClO₄(aq) + H₂O(l)
2) HCOOH(aq) + NaOH(aq) → HCOONa(aq) + H₂O(l)
3) Fe₃⁺(aq) + 3 Ag(s) → 3 Ag(aq) + Fe(s)
4) 2 NaCl(aq) + Pb(NO₃)2(aq) → PbCl₂(s) + 2 NaNO₃(aq)
5) HI(aq) + CH₃NH₂(aq) → CH₃NH₃(aq) + I-(aq)

Answer 1

Neutralization reactions occur when an acid and a base combine to produce water and a salt. Options 1 and 2 are acid-base reactions.

Step-by-step explanation:

When an acid and a base are combined, water and a salt are the products. Double displacement reactions of this type are called neutralization reactions. The equation given in option 1 represents a neutralization reaction between sodium hydroxide (NaOH) and perchloric acid (HClO₄). The equation in option 2 also represents a neutralization reaction between formic acid (HCOOH) and sodium hydroxide (NaOH). Therefore, options 1 and 2 are acid-base reactions.