- Lead(II)
chromate is an
inorganic compound with the
chemical formula PbCrO4. It has a
vivid yellow color and is
generally insoluble. Two
polymorphs of...
-
pigment chrome red,
which is
simply lead
chromate with lead(II)
hydroxide (
PbCrO4·
Pb(OH)2). A very
important chromate pigment,
which was used
widely in metal...
-
directly from the liquor.
Chromate containing minerals are rare. Crocoite,
PbCrO4,
which can
occur as
spectacular long red crystals, is the most commonly...
-
Crocoite is a
mineral consisting of lead chromate,
PbCrO4, and
crystallizing in the
monoclinic crystal system. It is
identical in
composition with the...
-
obscure pigment composed of a
mixture of lead
chromate and lead(II)
oxide (
PbCrO4•
PbO). ****nic
pigments Realgar: As4S4 - a
highly toxic natural pigment. Cadmium...
- Pb2+: Pb2+ + 2 KI →
PbI2 + 2 K+ Pb2+ + K2Cr
O4 →
PbCrO4 + 2 K+
Confirmation test for Ag+: Ag+ + KI → AgI + K+ 2Ag+ + K2Cr
O4 → Ag2Cr
O4 + 2 K+ Confirmation...
-
tetrahedral oxyanion,
three Cr-O bond
lengths are 156 pm and the
Cr-OH bond is 201 pm [HCr
O4]−
condenses to form dichromate: 2 [HCr
O4]− ⇌ [Cr2O7]2− + H2O, logKD...
- (
PbCrO4) with
strongly basic solution. Pb2CrO5 can be
synthesized with a gas-liquid
precipitation process.
Changing the pH
controls whether PbCrO4 or...
-
Chrome red –
basic lead
chromate –
PbCrO4+
PbO
Chrome yellow/Paris Yellow/Leipzig
Yellow – lead chromate,
PbCrO4 Cinnabar/Vermilion –
refers to several...
-
material for
making pigments such as
chrome yellow (lead(II) chromate,
PbCrO4) and
chrome orange (basic lead(II) chromate, Pb2CrO5) and
Naples yellow...