chloride CuCI(s) (II)chloride CuCl(s) 220 76 (n) chloride dihydrate CuCl2·2H2O(s) (II) hydroxide Cu(oh)2(s) -450 (I)oxide Cu2O(s) 169 (I) oxide 130 (II) sulfate CuSO4(s) +109 CuSO4·5H2O(s) 1880 (I)sulfide (II)sulfide fluorine (g) 203 F(g) +79 +62 F(aq) 335 Gallium +41 Ga(g) +277 +169 Ga t(aq) 212 331 bromide GaBr3(s) chloride GaCl3(s) +142 fluoride GaF3(s) -1163 iodide Gal3 (s) -236 ide Ga2O3(s) +85 germanium Ge(s) Ge(g) 372 +331 dioxide GeO(s) 237 tetrachloride -496 +348 tetraoxide GeO(s) Hydrogen +131 H(g) +218 +115 +203 HBr(g) HCl(g) 7 fluoride +174 hydrobromic acid HBr(aq) hydrochloric acid 67 56 hydrofluoric acid 279 90290 (I) chloride CuCl(s) −137 +86 −120 (II) chloride CuCl2(s) −220 +108 −176 (II) chloride dihydrate CuCl2·2H2O(s) −821 +167 −656 (II) hydroxide Cu(OH)2(s) −450 +108 −373 (I) oxide Cu2O(s) −169 +93 −146 (II) oxide CuO(s) −157 +43 −130 (II) sulfate CuSO4(s) −771 +109 −662 (II) sulfate pentahydrate CuSO4·5H2O(s) −2280 +300 −1880 (I) sulfide Cu2S(s) −80 +121 −86 (II) sulfide CuS(s) −53 +67 −54 Fluorine F2(g) 0 +203 0 F(g) +79 +159 +62 F − (aq) −335 −14 −281 Gallium Ga(s) 0 +41 0 Ga(g) +277 +169 +239 Ga3+ (aq) −212 −331 −159 bromide GaBr3(s) −387 +180 −360 chloride GaCl3(s) −525 +142 −455 fluoride GaF3(s) −1163 +84 −1085 iodide GaI3(s) −239 +204 −236 oxide Ga2O3(s) −1089 +85 −998 Germanium Ge(s) 0 +31 0 Ge(g) +372 +168 +331 dioxide GeO(s) −262 +50 −237 tetrachloride GeCl4(g) −496 +348 −457 tetraoxide GeO2(s) −580 +40 −521 Hydrogen H2(g) 0 +131 0 H(g) +218 +115 +203 H+ (aq) 0 0 0 bromide HBr(g) −36 +199 −53 chloride HCl(g) −92 +187 −95 fluoride HF(g) −273 +174 −275 hydrobromic acid HBr(aq) −122 +82 −104 hydrochloric acid HCl(aq) −167 +56 −131 hydrofluoric acid HF(aq) −333 −14 −279