Page 109 - Theory and Problems of BEGINNING CHEMISTRY

98 INORGANIC NOMENCLATURE [CHAP. 6

Chloride Sulfate Phosphate Hydroxide
Ans.
Ammonium NH 4 Cl (NH 4 ) 2 SO 4 (NH 4 ) 3 PO 4 NH 4 OH (unstable)
Lithium LiCl Li 2 SO 4 Li 3 PO 4 LiOH
Lead(II) PbCl 2 PbSO 4 Pb 3 (PO 4 ) 2 Pb(OH) 2
Vanadium(III) VCl 3 V 2 (SO 4 ) 3 VPO 4 V(OH) 3

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6.30. Name the following ions: (a) ClO ,(b)NO 2 , and (c)SO 4 2− .
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Ans. (a) Hypochlorite ion (b) Nitrite ion (c) Sulfate ion
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6.31. Name the following ions: (a) MnO 4 ,(b)O 2 2− ,(c) CrO 4 2− ,(d)Cr 2 O 7 2− , and (e)C 2 H 3 O 2 .
Ans. (a) Permanganate ion (b) Peroxide ion (c) Chromate ion (d) Dichromate ion (e) Acetate ion
6.32. Name the following ions: (a)H ,(b)OH ,(c)H ,(d)NH 4 , and (e)CN .
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Ans. (a) Hydrogen ion (b) Hydroxide ion (c) Hydride ion (d) Ammonium ion (e) Cyanide ion
6.33. Write formulas for each of the following compounds: (a) calcium cyanide, (b) calcium hydroxide,
(c) calcium peroxide, and (d) calcium hydride.
Ans. (a) Ca(CN) 2 (b) Ca(OH) 2 (c) CaO 2 (from Table 6-6) (d) CaH 2
6.34. What is the difference between the names phosphorus and phosphorous?

Ans. The first is the name of the element; the second is the name of the acid with fewer oxygen atoms than
phosphoric acid—H 3 PO 3 , phosphorous acid.

6.35. Write formulas for each of the following compounds: (a) barium bromide, (b) copper(II) bromate,
(c) titanium(III) fluoride, and (d) aluminum hydride.

Ans. (a) BaBr 2 (b) Cu(BrO 3 ) 2 (c)TiF 3 (d) AlH 3
6.36. Name and write formulas for each of the following: (a) the compound of potassium and bromine; (b) the
compound of calcium and bromine; and (c) the compound of aluminum and bromine.
Ans. (a) Potassium bromide, KBr (b) Calcium bromide, CaBr 2 (c) Aluminum bromide, AlBr 3
The bromide ion has a 1– charge. The potassium, calcium, and aluminum ions have charges of 1+,2+, and
3+, respectively, and the subscripts given are the smallest possible to just balance the charges.

6.37. Name and write formulas for each of the following: (a) the compound of lithium and sulfur; (b) the
compound of barium and sulfur; and (c) the compound of aluminum and sulfur.

Ans. (a) Lithium sulfide, Li 2 S(b) Barium sulfide, BaS (c) Aluminum sulfide, Al 2 S 3
The sulfide ion has a 2– charge. The lithium, barium, and aluminum ions have charges of 1+,2+, and 3+,
respectively, and the subscripts given are the smallest possible to just balance the charges.

6.38. Name and write formulas for each of the following: (a) two compounds of copper and chlorine, (b)two
compounds of platinum and fluorine, and (c) two compounds of cobalt and bromine. (If necessary, see
Table 6-4 for data.)
Ans. (a) Copper(I) chloride and copper(II) chloride, CuCl and CuCl 2 (b) Platinum(II) fluoride and platinum(IV)
fluoride, PtF 2 and PtF 4 (c) Cobalt(II) bromide and cobalt(III) bromide, CoBr 2 and CoBr 3

6.39. Name and write formulas for each of the following: (a) two compounds of iron and bromine, (b)two
compounds of palladium and bromine, and (c) two compounds of mercury and bromine.