Solubility Rules

Question 1

NO3-

Answer 1

All Soluble

Question 2

NH₄+

Answer 2

All Soluble

Question 3

SO₄-

Answer 3

Soluble

Except: 5

1. Hg
2. Ca
3. Pb
4. Sr
5. Ba​

Question 4

Metal Oxides

Answer 4

Insoluble

Except**: **4

1. Alkali metals (column 1)
2. Ca
3. Sr
4. Ba

Question 5

ClO₄-

Answer 5

All soluble

Question 6

Na+

Answer 6

All Soluble

Question 7

S^2-

Answer 7

Insoluble

Except: 3

1. Alkali Metals (column 1)
2. Alkaline Earth Metals (column 2)
3. Ammonium (NH₄+)

Question 8

Pb²⁺ , Pb⁴⁺

Answer 8

Insoluble

Except: 3

1. NO₃- Nitrate
2. ClO₄- Perchlorate
3. CH₃COO^- Acetate

Question 9

Ag+

Answer 9

Insoluble

Except: 3

1. NO₃- Nitrate
2. ClO₄- Perchlorate
3. CH₃COO- Acetate

Question 10

K+

Answer 10

All Soluble

Question 11

Ba(NO₃)₂

Answer 11

Soluble

Question 12

SrSO₄

Answer 12

Insoluble

Question 13

Li+

Answer 13

All Soluble

Question 14

CaS, Ca(OH)₂

Answer 14

Soluble

Question 15

Acetate

(C₂H₃O₂- or CH₃COO- )

Answer 15

All Soluble

Question 16

Fe₂O₃

Answer 16

Insoluble

Question 17

SrS, Sr(OH)₂

Answer 17

Soluble

Question 18

Halogens

Answer 18

Soluble

Except: 3

1. Ag
2. Hg
3. Pb

Question 19

BaS, Ba(OH)₂

Answer 19

Soluble

Question 20

CO₃^2-

Answer 20

Insoluble

Except: 2

1. Alkali metals (column 1)
2. Ammonium (NH₄⁺)

Question 21

Pb(OH)₄

Answer 21

Insoluble

Question 22

PO₄^3-

Answer 22

Insoluble

Except: 2

1. Alkali metals (column 1)
2. Ammonium (NH₄⁺)

Question 23

Hg₂S

Answer 23

Insoluble

Question 24

Ca(CrO₄)₂

Answer 24

Soluble

Question 25

Ag₂NO₃

Answer 25

Soluble

Question 26

CaCO₃

Answer 26

Insoluble

Question 27

OH-

Answer 27

Insoluble **Except: 3** 1. Alkali metals (column 1) 2. Alkaline earth metals (column 2) 3. Ammonium (NH₄⁺)

Question 28

Hg₂²⁺, Hg²⁺

Answer 28

Insoluble **Except: 3** 1. NO₃^- Nitrate 2. ClO₄- Perchlorate 3. CH₃COO- Acetate