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preface to fifteenth edition

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6.90 SECTION 6<br />

TABLE 6.3<br />

Enthalpies and Gibbs Energies of Formation, Entropies, and Heat Capacities of the Elements<br />

and Inorganic Compounds (Continued)<br />

Physical f H f G S C p<br />

Substance State kJ · mol 1 kJ · mol 1 J · deg 1 ·mol 1 J · deg 1 ·mol 1<br />

Cs 2 SO 4 c 1443.0 1323.6211.9 134.9<br />

std. state aq 1425.8 1328.6286.2<br />

Chlorine<br />

Cl a<strong>to</strong>mic g 121.301(8) 165.190(4)<br />

Cl std. state aq 167.08(10) 131.3 56.60(20) 136.4<br />

Cl 2 g 0 0 233.08(10) 33.95<br />

ClF g 50.3 51.84 217.9 32.08<br />

ClF 3 g 163.2 123.0 281.663.85<br />

ClF 5 g 239 147 310.74 97.17<br />

ClO g 101.8 98.1 226.6 31.5<br />

ClO std. state aq 107.1 36.8 41.8<br />

ClO 2 g 102.5 120.5 256.8 42.00<br />

<br />

ClO 2 std. state<br />

aq 66.5 17.2 101.3<br />

<br />

ClO 3 std. state<br />

aq 104.0 8.0 162.3<br />

ClO 3 F perchloryl fluoride g 23.8 48.2 279.0 64.9<br />

<br />

ClO 4 std. state<br />

aq 128.10(40) 8.62 184.0(15)<br />

Cl 2 O g 80.3 97.9 266.2 45.4<br />

Cl 2 O 7 lq 238.1<br />

g 1138<br />

Chromium<br />

Cr c 0 0 23.8 23.43<br />

Cr 2 std. state aq 143.5<br />

CrBr 2 c 302.1<br />

CrCl 2 c 395.4 356.0 115.3 71.2<br />

CrCl 3 c 556.5 486.1 123.0 91.8<br />

Cr(CO) 6 hexacarbonyl c 1077.8 293.01 226.23<br />

CrF 2 c 778.0<br />

CrF 3 c 1159 1088 93.9 78.7<br />

Cr 2 FeO 4 c 1444.7 1343.8 146.0 133.6<br />

CrI 2 c 156.9<br />

CrI 3 c 205.0<br />

CrN c 117 93 38 52.7<br />

CrO 2 c 598.0<br />

Cr 2 O 3 c 1140 1058.1 81.2 118.7<br />

Cr 3 O 4 c 1131.0<br />

CrO 2 Cl 2 g 538.1 501.6329.8 84.5<br />

2<br />

CrO 4 std. state<br />

aq 881.15 727.85 50.21<br />

<br />

HCrO 4 std. state<br />

aq 878.22 764.84 184.1<br />

Cr O 2<br />

2 7 std. state<br />

aq 1490.3 1301.2 261.9<br />

Cr 2 (SO 4 ) 3 c 609.6 269.9 302.6<br />

Cobalt<br />

Co c 0 0 30.0 24.8<br />

Co 2 std. state aq 58.2 54.4 113<br />

Co 3 std. state aq 92 134 305<br />

CoBr 2 c 220.9 79.5<br />

std. state aq 301.3 262.3 50<br />

CoCl 2 c 312.5 269.8 109.2 78.49<br />

std. state aq 392.5 316.7 0<br />

CoCO 3 c 713.0<br />

CoF 2 c 692 647 82.4 68.9<br />

CoF 3 c 790 719 95 92

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