Summer Solubility

Question 0

Which ions are generally soluble? (names and formulas)

Answer 0

Chloride, Bromide, Iodide (except w/Silver, Lead, Mercurous)
Cl^-, Br^-, I^- (except Ag⁺, Pb²⁺, Hg₂²⁺)

Fluoride (except w/Calcium, Strontium, Barium, Lead, Magnesium)
F^- (except Ca²⁺, Sr²⁺, Ba²⁺, Pb²⁺, Mg²⁺)

Sulfate (except w/Calcium, Strontium, Barium, Lead)
SO₄^2- (except Ca²⁺, Sr²⁺, Ba²⁺, Pb²⁺)

Question 1

Which ions are always soluble? (names and formulas)

Answer 1

Alkali metals (Li<sup>+</sup>, Na<sup>+</sup>, K<sup>+</sup>, Rb<sup>+</sup>, Cs<sup>+</sup>), ammonium (NH<sub>4</sub><sup>+</sup>), nitrate (NO<sub>3</sub><sup>-</sup>), chlorate (ClO<sub>3</sub><sup>-</sup>),
 perchlorate (ClO<sub>4</sub><sup>-</sup>), acetate (C<sub>2</sub>H<sub>3</sub>O<sub>2</sub><sup>-</sup>), bicarbonate/carbonic acid (HCO<sub>3</sub><sup>-</sup>)

Question 2

Which ions are generally insoluble? (names and formulas)

Answer 2

Oxide, hydroxide (except alkali metals, ammonium; somewhat soluble with calcium, strontium, barium)
O^2-, OH^- (except Li⁺, Na⁺, K⁺, Rb⁺, Cs⁺, NH4⁺; somewhat soluble w/ Ca²⁺, Sr²⁺, Ba²⁺)

Carbonate, phosphate, sulfide, sulfite, oxalate, chromate (except alkali metals, ammonium)
CO₃^2-, PO₄^3-, S^2-, SO₃^2-, C₂O₄^2-, CrO₄^2- (except Li⁺, Na⁺, K⁺, Rb⁺, Cs⁺, NH₄⁺)

Question 3

Alkali metal ions - soluble?

Answer 3

Yes, always.

Question 4

Li⁺ - soluble?

Answer 4

Yes, always.

Question 5

Na⁺ - soluble?

Answer 5

Yes, always.

Question 6

K⁺ - soluble?

Answer 6

Yes, always.

Question 7

Rb⁺ - soluble?

Answer 7

Yes, always.

Question 8

Cs⁺ - soluble?

Answer 8

Yes, always.

Question 9

Ammonium - soluble?

Answer 9

Yes, always.

Question 10

NH₄⁺ - soluble?

Answer 10

Yes, always.

Question 11

Nitrate - soluble?

Answer 11

Yes, always.

Question 12

NO₃^- - soluble?

Answer 12

Yes, always.

Question 13

Chlorate - soluble?

Answer 13

Yes, always.

Question 14

ClO₃^- - soluble?

Answer 14

Yes, always.

Question 15

Perchlorate - soluble?

Answer 15

Yes, always.

Question 16

ClO₄^- - soluble?

Answer 16

Yes, always.

Question 17

Acetate - soluble?

Answer 17

Yes, always.

Question 18

C₂H₃O₂^- - soluble?

Answer 18

Yes, always.

Question 19

Bicarbonate/carbonic acid - soluble?

Answer 19

Yes, always.

Question 20

HCO₃^- - soluble?

Answer 20

Yes, always.

Question 21

Chloride - soluble?

Answer 21

Yes, except with Ag⁺, Pb²⁺, and Hg₂²⁺
or
Silver, lead, and mercurous

Question 22

Cl^- - soluble?

Answer 22

Yes, except with Ag⁺, Pb²⁺, and Hg₂²⁺
or
Silver, lead, and mercurous

Question 23

Bromide - soluble?

Answer 23

Yes, except with Ag⁺, Pb²⁺, and Hg₂²⁺
or
Silver, lead, and mercurous

Question 24

Br^- - soluble?

Answer 24

Yes, except with Ag⁺, Pb²⁺, and Hg₂²⁺
or
Silver, lead, and mercurous

Question 25

Iodide - soluble?

Answer 25

Yes, except with Ag⁺, Pb²⁺, and Hg₂²⁺
or
Silver, lead, and mercurous

Question 26

I^- - soluble?

Answer 26

Yes, except with Ag⁺, Pb²⁺, and Hg₂²⁺
or
Silver, lead, and mercurous

Question 27

Fluoride - soluble?

Answer 27

Yes, except with Ca²⁺, Sr²⁺, Ba²⁺, Pb²⁺, and Mg²⁺
or
Calcium, strontium, barium, lead, and magnesium

Question 28

F^- - soluble?

Answer 28

Yes, except with Ca²⁺, Sr²⁺, Ba²⁺, Pb²⁺, and Mg²⁺
or
Calcium, strontium, barium, lead, and magnesium

Question 29

Sulfate - soluble?

Answer 29

Yes, except with Ca²⁺, Sr²⁺, Ba²⁺, and Pb²⁺
or
Calcium, strontium, barium, and lead

Question 30

SO₄^2- - soluble?

Answer 30

Yes, except with Ca²⁺, Sr²⁺, Ba²⁺, and Pb²⁺
or
Calcium, strontium, barium, and lead

Question 31

Oxide - soluble?

Answer 31

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ ; somewhat soluble with Ca 2+, Sr 2+, and Ba 2+ or Soluble with alkali metal ions and ammonium ; somewhat soluble with calcium, strontium, and barium

Question 32

O 2- - soluble?

Answer 32

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ ; somewhat soluble with Ca 2+, Sr 2+, and Ba 2+ or Soluble with alkali metal ions and ammonium ; somewhat soluble with calcium, strontium, and barium

Question 33

Hydroxide - soluble?

Answer 33

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ ; somewhat soluble with Ca 2+, Sr 2+, and Ba 2+ or Soluble with alkali metal ions and ammonium ; somewhat soluble with calcium, strontium, and barium

Question 34

OH- - soluble?

Answer 34

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ ; somewhat soluble with Ca 2+, Sr 2+, and Ba 2+ or Soluble with alkali metal ions and ammonium ; somewhat soluble with calcium, strontium, and barium

Question 35

Carbonate - soluble?

Answer 35

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium

Question 36

CO3 2- - soluble?

Answer 36

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium

Question 37

Phosphate - soluble?

Answer 37

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium

Question 38

PO4 3- - soluble?

Answer 38

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium

Question 39

Sulfide - soluble?

Answer 39

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium

Question 40

S 2- - soluble?

Answer 40

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium

Question 41

Sulfite - soluble?

Answer 41

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium

Question 42

SO3 2- - soluble?

Answer 42

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium

Question 43

C2O4 2- - soluble?

Answer 43

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium

Question 44

Oxalate - soluble?

Answer 44

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium

Question 45

Chromate - soluble?

Answer 45

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium

Question 46

CrO4 2- - soluble?

Answer 46

No, except with Li+, Na+, K+, Rb+, Cs+, and NH4+ or Soluble with alkali metal ions and ammonium