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2-13<br />

Chromium<br />

trioxide (chromic acid)<br />

Cr<br />

CrO3 gray, met., cb.<br />

red, rhb.<br />

7.1<br />

2.70<br />

1615<br />

197 d.<br />

2200 i.<br />

164.9<br />

i. s. HCl, dil. H2SO4; i. HNO3 0° 206.7100° Chromous chloride<br />

hydroxide<br />

oxide<br />

sulfate<br />

CrCl2 Cr(OH) 2<br />

CrO<br />

CrSO47H2O wh., delq.<br />

yel.-brn.<br />

bk. pd.<br />

blue<br />

2.75<br />

d.<br />

v. s.<br />

d.<br />

i.<br />

12.35<br />

v. s.<br />

i.<br />

s. H2SO4, al., et.<br />

sl. s. al.; i. et.<br />

s. conc. a.<br />

i. dil. HNO3 0 sulfide (daubrelite)<br />

Chromyl chloride<br />

Cobalt<br />

CrS<br />

CrO2Cl2 Co<br />

bk. pd.<br />

dark red lq.<br />

silv. met., cb.<br />

3.97<br />

1.92<br />

8.9<br />

1550<br />

−96.5 117.6<br />

i.<br />

d.<br />

sl. s. al.<br />

v. s. a.<br />

s. et.<br />

20° carbonyl Co(CO) 4 or. cr. 1.73<br />

1480 2900 i. i. s. a.<br />

18° sulfide, di-<br />

Cobaltic chloride<br />

chloride, dichro<br />

chloride, luteo<br />

CoS2 CoCl3 Co(NH3)3Cl3H2O Co(NH3)6Cl3 bk., cb.<br />

red cr.<br />

or., mn.<br />

4.269<br />

2.94<br />

1.7016<br />

51<br />

subl.<br />

d. 52 i.<br />

i.<br />

s.<br />

s.<br />

d.<br />

s.<br />

s. al., et., CS2 s. HNO3, aq. reg.<br />

s. a.; al.<br />

20° 4.260° 12.7446.5° chloride, praseo<br />

Cobaltic chloride, purpureo<br />

Co(NH3)4Cl3H2O Co(NH3)5Cl3 gn., rhb.<br />

rhb.<br />

1.847<br />

1.819<br />

v. s.<br />

i. al., NH4OH<br />

s. a.; i. al.<br />

25°<br />

25 0.2320° 1.03146.5° chloride, roseo Co(NH3)5Cl3H2O brick red d. 100 16.12<br />

i. al.<br />

0° 24.8716° hydroxide<br />

oxide<br />

sulfate<br />

sulfide<br />

Cobalto-cobaltic oxide<br />

Cobaltous acetate<br />

Co(OH) 3<br />

Co2O3 Co2(SO4)3 Co2S3<br />

Co3O4 Co(C2H3O2)24H2O<br />

bk.<br />

bk.<br />

blue cr.<br />

bk. cr.<br />

bk., cb.<br />

red-vl., mn., 1.542<br />

5.18<br />

4.8<br />

6.07<br />

1.7053<br />

−1aH2O, 100<br />

d. 900<br />

i.<br />

i.<br />

d.<br />

i.<br />

i.<br />

i.<br />

i.<br />

i.<br />

sl. s. HCl<br />

s. a.; i. al.<br />

s. a.<br />

s. H2SO4<br />

d. a.<br />

s. H2SO4; i. HCl, HNO3<br />

18.7° chloride CoCl2 blue cr. 3.356<br />

−4H2O, 140<br />

subl. 1049<br />

s.<br />

45<br />

s. s. a., al.<br />

7° 10596° chloride CoCl26H2O* red, mn. 1.924<br />

31 al.; 8.6 act.<br />

25°<br />

25 86 −6H2O, 110 116.50° 17780° nitrate Co(NO3)26H2O red, mn., 1.4 1.883<br />

v. s. et., act.<br />

25°<br />

25 1100 0.0003818° Copper Cu yel.-red met., cb. 8.92<br />

s. a., aq. reg.<br />

20° Cupric acetate Cu(C2H3O2) 2 1.930<br />

1083 2300 i. i. s. HNO3, h. H2SO4 20°<br />

acetate<br />

aceto-arsenite (Paris green)<br />

ammonium chloride<br />

Cu(C2H3O2) 2H2O (CuOAs2O3) 3<br />

Cu(C2H3O2) 2*<br />

CuCl22NH4Cl2H2O dark gn., mn.<br />

gn.<br />

blue, tet., 1.670,<br />

4<br />

1.882<br />

1.98<br />

115<br />

d. 110<br />

240 d.<br />

s.<br />

7.2<br />

i.<br />

33.8<br />

20 7 al.; s. et.; gly.<br />

s. a., NH4OH 0° 99.380° 1.744<br />

s. a.<br />

ammonium sulfate CuSO44NH3H2O blue, rhb. 1.81 d. 150 18.0521.5° 52.00<br />

99.99<br />

122.90<br />

86.01<br />

68.00<br />

274.17<br />

84.06<br />

154.90<br />

58.93<br />

170.97<br />

123.06<br />

165.29<br />

234.40<br />

267.48<br />

251.43<br />

250.44<br />

268.46<br />

109.96<br />

165.86<br />

406.05<br />

214.06<br />

240.80<br />

249.08<br />

129.84<br />

237.93<br />

291.03<br />

74.93<br />

155.00<br />

173.01<br />

281.10<br />

91.00<br />

63.55<br />

181.63<br />

199.65<br />

1013.79<br />

277.47<br />

carbonate, basic (azurite) 2CuCO3Cu(OH) 2<br />

245.75<br />

344.67 blue, mn., 1.758 3.88 d. 220 i.<br />

d.<br />

d.<br />

i. al.<br />

s. NH4OH, h. aq.<br />

carbonate, basic (malachite)<br />

chloride (eriochalcite)<br />

CuCO3Cu(OH) 2<br />

CuCl2 dark gn., mn., 1.875<br />

brn.-yel. pd.<br />

3.9<br />

3.054<br />

d.<br />

498 Forms Cu2Cl2 i.<br />

70.7<br />

d. s. KCN; 0.03 aq. CO<br />

0° 107.9100° 5315° al.; 6815° 993<br />

m. al.<br />

chloride CuCl22H2O gn., rhb., 1.684 2.3922.4° −2H2O, 110 d. 110.40° 192.4100° chromate, basic<br />

cyanide<br />

dichromate<br />

CuCrO42CuO2H2O<br />

Cu(CN)2<br />

CuCr2O72H2O yel.-brn.<br />

yel.-gn.<br />

bk., tri. 2.286<br />

−2H2O, 260<br />

d.<br />

i.<br />

i.<br />

s. al.; et., NH4Cl s. HNO3, NH4OH<br />

s. KCN, C5H5N 18° ferricyanide<br />

ferrocyanide<br />

formate<br />

hydroxide<br />

lactate<br />

Cu3[Fe(CN) 6] 2<br />

Cu2Fe(CN) 67H2O Cu(HCO2) 2<br />

Cu(OH) 2<br />

Cu(C3H5O3) 22H2O yel.-gn.<br />

red-brn.<br />

blue, mn.<br />

blue, gelatinous<br />

dark blue, mn.<br />

1.831<br />

3.368<br />

−2H2O, 100<br />

−H2O sl. s.<br />

i.<br />

i.<br />

12.5<br />

i.<br />

16.7<br />

d.<br />

i.<br />

d.<br />

d.<br />

45<br />

s. a.; NH4OH s. NH4OH; i. HCl<br />

s. NH4OH; i. a., NH8 0.25 al.<br />

s. a., NH4OH, KCN, al.<br />

100° nitrate Cu(NO3) 23H2O* blue, delq. 2.047<br />

sl. s. al.<br />

3.9° 114.5 −HNO3, 170 38140° 66680° 10012.5° nitrate Cu(NO3) 26H2O blue, rhb. 2.074 −3H2O, 26.4 243.7<br />

al.<br />

0° 221.12<br />

134.45<br />

*Usual commercial form.<br />

†Also a soluble modification.<br />

170.48<br />

374.66<br />

115.58<br />

315.56<br />

614.54<br />

465.15<br />

153.58<br />

97.56<br />

277.72<br />

241.60<br />

295.65<br />

∞ s. al.<br />

NaHCO 3

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