Multiple Choice
Which one of the following compounds is insoluble in water?
32
views
6. Chemical Quantities & Aqueous Reactions
Solubility Rules
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following reactions is an example of a precipitation reaction according to solubility rules?
A
CO2(g) + H2O(l) → H2CO3(aq)
B
NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq)
C
HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)
D
KNO3(aq) + H2O(l) → K+(aq) + NO3-(aq)
Verified step by step guidance1
Step 1: Understand what a precipitation reaction is. A precipitation reaction occurs when two aqueous solutions react to form an insoluble solid called a precipitate.
Step 2: Review the solubility rules to identify which products are insoluble solids. Most salts of Na+, K+, and NO3- are soluble, while some salts like AgCl are insoluble and form precipitates.
Step 3: Analyze each reaction to see if an insoluble solid forms:
- For CO2(g) + H2O(l) → H2CO3(aq), no solid forms; this is a gas dissolving in water.
- For NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq), AgCl is an insoluble solid precipitate.
- For HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l), all products are aqueous or liquid; no precipitate forms.
- For KNO3(aq) + H2O(l) → K+(aq) + NO3-(aq), this is just dissociation, no precipitate.
Step 4: Conclude that the reaction forming AgCl(s) is the precipitation reaction because it produces an insoluble solid according to solubility rules.
Step 5: Remember that precipitation reactions are important in identifying ions in solution and are characterized by the formation of a solid from two aqueous reactants.
2:07mWatch next
Master Solubility and Insolubility with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Solubility Rules practice set
Problem sets built by lead tutorsExpert video explanations