"If the public becomes more aware of the environmental dangers of
lead wheel weights and is given alternative wheel balancing choices then
there will be a decrease in lead entering the environment. It is
important that we make sure that the water we drink and the air we
breathe is free of lead." TEAM DEAD WEIGHT
SOLUBILITY OF COMPOUNDS IN WATER RULES
WITH A SPECIAL EMPHASIS ON WHAT LEAD COMPOUNDS
ARE SOLUBLE IN WATER
LEAD IS A GROUP 14 HEAVY METAL
All silver, lead and mercury(I) salts are considered insoluble.
http://www.csudh.edu/oliver/chemdata/data-ksp.htm
All compounds of the ammonium ion (NH4+), and of Alkali metal
(Group IA) cations, are soluble. This does not include Lead
because Lead is a Group 14 heavy metal.
All nitrates and acetates (ethanoates) are soluble.
Lead forms water soluble compounds with nitrates and acetates.
All chlorides, bromides and iodides are soluble EXCEPT those of
silver, lead and mercury(I).
All sulphates are soluble EXCEPT those of silver, lead, mercury(I),
barium, strontium and calcium.
All carbonates (except Lead carbonate), sulfites and phosphates are
insoluble EXCEPT those of ammonium and Alkali metal (Group IA) cations.
Lead is a Group 14 heavy metal.
Elementary lead does not dissolve in water under normal conditions
(20oC, and pressure = 1 bar). It may however occur dissolved in water
as PbCO3 or Pb(CO3)22-. A well-known example of a water soluble lead
compound is lead sugar (lead(II)acetate), which derived its name from
its sweet nature. Lead frequently binds to sulphur in sulphide form
(S2-), or to phosphor in phosphate form (PO43-). In these forms lead
is extremely insoluble, and is present as immobile compounds in the
environment. Lead compounds are generally soluble in soft, slightly
acidic water.
Read more:http://www.lenntech.com/periodic/water/lead/lead-and-water.htm#ixzz0J9qGj4U2&C
All hydroxides are insoluble EXCEPT those of ammonium, barium and
alkali metal (Group I) cations. Lead is a Group 14 heavy metal.
(Exception)Lead hydroxide is slightly soluble at times but unstable
and for the most part considered unsoluble in water.
All sulfides are insoluble EXCEPT those of ammonium, Alkali metal
(Group I) cations and Alkali earth metal (Group II) cations.
Lead is a Group 14 heavy metal.
All oxides are insoluble EXCEPT those of calcium, barium and Alkali
metal (Group I) cations; these soluble ones actually react with the
water to form hydroxides (hydrolyse). Lead is a Group 14 heavy metal.
lead(II)acetate Pb(C2H3O2)2
Lead acetate is soluble in water and glycerin.
Lead acetate forms readily in landfills
from the chemical reaction of acetic acid with lead.
Acetic acid is formed in landfills due to
the presence of acetic acid producing bacteria.
The bacteria feed on landfill sugars to produce
acetic acid. Discarded Lead wheel weights can react
with land fill acetic acid to form deadly lead acetate
Lead wheel weights are still being deposited in landfills
due to the lack of any regulatory laws. Click here
to read about a pioneering lead wheel weight study.lead nitrate Pb(NO3)2
Dilute nitric acids are contained in acid rain.
Solubility in water 52 g/100 ml (20 °C)
Solubility in water 60 g/100 mL in warmer water. Click here
to read about a pioneering lead wheel weight study.
http://www.lenntech.com/periodic/water/lead/lead-and-water.htm
Lead(II) bromide PbBr2 6.60×10-6
Solubility in water 4.55 g/100 g (0 °C)
lead(II) carbonate PbCO3 7.4 x 10-14
Elementary lead does not dissolve in water under normal conditions
(20oC, and pressure = 1 bar). It may however occur dissolved in water
as PbCO3 or Pb(CO3)22-. Solubility in water 0.011 g/100 mL (20 °C)
Solubility product, Ksp 1.46 x 10-13
Solubility insoluble in alcohol, ammonia;
soluble in acid, alkali
lead(II) chloride PbCl2 1.6 x 10-5
The solubility of PbCl2
in water is low (9.9 g/L at 20 °C) and for practical purposes
it is considered insoluble.
lead(II) chromate PbCrO4 2.8 x 10-13
Solubility in water negligible
lead dioxide
Used to make lead-acid battery.
Solubility in water insoluble
lead(II) fluoride PbF2 2.7 x 10-8
Solubility in water insoluble
lead(II) hydroxide Pb(OH)2 1.2 x 10-5
slightly water soluble
Solubility in water 1.55 g/100 mL (20 °C)
Soluble in dilute acid and alkalis;
Insoluble in acetone and acetic acid
Under normal conditions lead does not react with water.
However, when lead comes in contact with moist air reactivity with
water increases. A small lead oxide (PbO) layer forms at the surface
of the metal. When both oxygen and water are present, metallic lead
is converted to lead hydroxide (Pb(OH)2):
2Pb(s)+ O2(g) + 2H2O(l) -> 2 Pb(OH)2(s)
Read more: http://www.lenntech.com/periodic/water/lead/lead-and-water.htm#ixzz0JA4OOgTC&C
unstable as a solid
lead(II) iodate Pb(IO3)2 2.6 x 10-13
complete solubility information unavailable
insoluble in water
lead(II) iodide PbI2 7.1 x 10-9
Solubility in water 0.075 g/100 ml (cold)
0.43 g/100 ml (hot)
negligible solubility in water
Lead(II) oxalate PbC2O4 8.5×10-9
solubility information unavailable
white solid used in platinum photography printing
Lead(II) oxide, PbO
Solubility in water insoluble
Lead(II,II,IV) oxide, Pb3O4
Red lead is virtually insoluble in water. However,
it is soluble in hydrochloric acid present in the stomach,
and therefore it is toxic when ingested.
It is also insoluble in alcohol.
It dissolves in hydrochloric acid, glacial acetic acid,
and diluted mixture of nitric acid and hydrogen peroxide.
Lead phosphate Pb3(PO4)2
Pb3PO4 A poisonous, white powder that melts at 1014°C; soluble
in nitric acid and in fixed alkali hydroxide;
used as a stabilizer in plastics.
Lead(II) selenate PbSeO4 1.37×10-7
solubility information unavailable
lead(II) sulfate PbSO4 1.6 x 10-8
4.25 mg/100 ml (25 ºC)
Lead(II) sulfate (sulphate in British English) (PbSO4)
Lead sulfate is poorly soluble in water and
is a white crystal or powder. It is also known as fast white,
milk white, sulfuric acid lead salt or anglesite.
It is often seen in the terminals of car batteries, as it is formed
when the battery is discharged (when the battery is recharged,
then the lead sulfate can be transformed back to metallic lead
and sulfuric acid on the negative terminal or lead dioxide and
sulfuric acid on the positive terminal).
lead(II) sulfide PbS 3 x 10-29
Solubility in water: insoluble
Solubility Rules
Although all compounds have a characteristic solubility in water
at a given temperature, some families of compounds are more soluble
than others and it is useful to know certain general rules of
solubility. We call any substance the solubility of which is less
than 0.01 mol/L insoluble. If its solubility is greater than
0.1 mol/L, we call it soluble. If its solubility is between 0.01
and 0.1 mol/L, we say that it is slightly soluble. The following
solubility rules can be used to determine solubilities in water,
with the disclaimer that they don't always hold, nor do they include
every ion which is in common use, but they are good to have nearby
when needed.
