Solubility Rules

14 flashcards

NO₃⁻ Z

all nitrates are soluble

C₂H₃O₂⁻

all acetates are soluble

Cl⁻

soluble except AgCl, Hg₂Cl₂, and PbCl₂

Br⁻

soluble except AgBr, Hg₂Br₂, and PbBr₂

I⁻

soluble except Ag, Hg and Pb

IO₃⁻

soluble in water except for Sr(IO₃)₂, Ca(IO₃)₂, Ba(IO₃)₂, Pb(IO₃)₂, Hg₂(IO₃)₂, and AgIO₃

SO₄²⁻

soluble in water except for those of silver (Ag₂SO₄), lead(II) (PbSO₄), mercury(I) (Hg₂SO₄), calcium (CaSO₄), strontium (SrSO₄), and barium (BaSO₄)

S²⁻

are insoluble Group 2A (alkaline earth) hydroxides such as Ba(OH)₂, Sr(OH)₂, and Ca(OH)₂, plus (NH₄)₂S

CO₃²⁻

insoluble except 1A elements (NH₄)₂CO₃

PO₄³⁻

Insoluble except 1A elements and (NH₄)3PO₄

OH⁻

insoluble except 1A elements and NH₄⁺ Ba(OH)2, Sr(OH)2, and Ca(OH)2

NH₄⁺

ammonium always soluble

What are Halides?

soluble (Cl⁻, Br⁻. I⁻) exceptions: Ag, Hg2, and Pb

ClO₄⁻

Perchlorate are always soluble