Acids and bases?

Question

rank the following solutions in order of most acidic to least

0.10M NaHCO3
0.10M NH4Cl
0.10M H2S

please help.

Answer 1

0.10M NaHCO₃
0.10M NH₄Cl
0.10M H₂S

The order is as follows.

H₂S is an acid - hydrosulfuric acid.

NH₄OH+ HCl → NH₄Cl  is formed from the reaction of a weak base(NH₄OH) and a strong acid (HCl). As such, it is acidic salt.

NaOH + H₂CO3  → NaHCO3 + H₂O  is formed from the reaction of a strong base sodium hydroxide (NaOH) and a weak acid carbonic acid (H₂CO₃). As such, it is a basic salt.