Write the formula of the following (a) Red lead (b) Dry ice (c) Phosgene (d) Litharge (e) Massicote (f) Water galss (g) White lead (h) Carborundum (i) Butter of tin (j) Mossaic gold (k) Tincal/suhaga (l) Mica

The chemical formula of these following compound is : (a) Red Lead : Pb 3 O 4 Lead(II, IV) oxide, also called red lead or minium, is the inorganic compound with the formula Pb 3 O 4 (b) Dry ice : CO 2 Dry ice is the solid form of carbon dioxide (chemical formula CO 2 ), comprising two oxygen atoms bonded to a single carbon atom.It is used primarily as a cooling agent, but is also used in fog machines at theatres for dramatic effects. Its advantages include lower temperature than that of water ice and not leaving any residue (c) Phosgene: COCl 2 Phosgene is a highly toxic gas produced by the burning of chlorinated hydrocarbons or the action of ultraviolet radiation on such compounds (d) Litharge : PbO Litharge (from Greek lithargyros, lithos (stone) + argyros (silver) is one of the natural mineral forms of lead(II) oxide, PbO (e) Massicote : PbO Massicot is lead (II) oxide mineral with an orthorhombic lattice structure. (f) water glass : Na 2 ( SiO 2 ) n O The most common formula is Na 2 ( SiO 2 ) n O , although K 2 ( SiO 2 ) n O is also a form of water glass. (g) White Lead : ( PbCO 3 ) 2 · Pb ( OH ) 2 White lead is the basic lead carbonate 2 PbCO 3 · Pb ( OH 2 It is a complex salt, containing both carbonate and hydroxide ions. White lead occurs naturally as a mineral. (h) Carborumdum : SiC Silicon carbide, also known as carborundum, is a semiconductor containing silicon and carbon. It occurs in nature as the extremely rare mineral moissanite. (i) Butter of tin SnCl 4 . 5 H 2 O “Butter of Tin” is also known as tin tetrachloride pentahydrate. It is called “butter of tin” because of its physical appearance. (j) Mossaic gold S 2 Sn Mosaic gold or bronze powder refers to tin ( IV ) sulfide as used as a pigment in bronzing and gilding wood and metal work (k) Tincal / Suhaga : Na 2 [ B 4 O 5 ( OH ) 4 ] . 8 H 2 O The correct formula is Na 2 [ B 4 O 5 ( OH ) 4 ] . 8 H 2 O . Naturally occurring borax is called tincal or suhaga. Tincal obtained from dried up lakes contains 50 % borax (l) Mica : Al 2 K 2 O 6 Si A natural occurring mineral that is based on a collection of silicate minerals and composed of varying amounts of potassium, iron, aluminium, magnesium and water is Mica

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-3>Q 35

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-3>Q 36

Write the formula of the following

(a)	Red lead	(b)	Dry ice	(c)	Phosgene	(d)	Litharge
(e)	Massicote	(f)	Water galss	(g)	White lead	(h)	Carborundum
(i)	Butter of tin	(j)	Mossaic gold	(k)	Tincal/suhaga	(l)	Mica