Chemical Reactions

Question 1

Precipitation reactions

Answer 1

When an insoluble forms in a reaction and is contained in aqueous solution

Question 2

NAG SAG

Answer 2

Always soluble:
Nitrates (NO3-)
Acetates (C2H3O2-)
Group 1A

Mostly soluble:
Sulfates (SO₄^2-)
Ammonium (NH4+)
Group 17

Question 3

What are these for and what are they PMS and Castro Bear

Answer 3

These are exceptions to solubility for compounds that are mostly soluble

PMS: represents the exceptions for S and G in SAG
Pb2+ (Lead)
Mercury
Silver

Castro Bear: exceptions for P in PMS
Ca2+, Sr2+, Ba2+

Question 4

Charlie Puth’s cat (CPC)
And
Halilies’ song (HS)

Answer 4

Carbonates (CO₃^2-)
Phosphates (PO₄^2-)
Chromates (CrO₄^2-)

Hydroxides (OH-)
Sulfides (S2-)

Question 5

What are these for GangstA (GA) and GCastro Bear2

Answer 5

Exceptions to insolubility rules:
GA=Group 1 and Ammonium are an exception to CPC for insolubility

GCastro bear2=group 1 and Ca2+, Sr2+, Br2+, which is an exception to HS