The trade name of basic lead carbonate is
2023
The trade name of basic lead carbonate is
- A.
White lead
- B.
Red lead
- C.
Litharge
- D.
More than one of the above
- E.
None of the above
Attempted by 25 students.
Show answer & explanation
Correct answer: A
Lead forms several distinct commercial compounds — carbonates, oxides, and hydroxides — each with its own trade name; the correct name is tied to the compound's actual chemical composition, not simply to the fact that it contains lead.
Compound | Chemical formula | Trade name |
|---|---|---|
Basic lead carbonate | 2PbCO3·Pb(OH)2 | White lead (ceruse) |
Lead tetroxide | Pb3O4 | Red lead |
Lead monoxide | PbO | Litharge |
Basic lead carbonate — the compound in the question — is industrially marketed as white lead, the traditional white pigment used in paints before lead-safety regulations restricted it.
Red lead is a name for lead tetroxide (Pb3O4), a chemically distinct oxide used as an anti-rust primer, not for basic lead carbonate.
Litharge is a name for lead monoxide (PbO), another distinct oxide used in glass and ceramics, again not for basic lead carbonate.
Since only white lead among these names matches basic lead carbonate's actual composition, the 'more than one' and 'none of the above' options both fail.
Therefore, the trade name of basic lead carbonate is white lead.