January 2019 2 22 Report
7)
Określić entalpia reakcji Fe (t) + Cl2 (g) = FeCl2 (t), wiedząc entalpii następujących reakcji :
Fe (t) + 2HCl (aq) = FeCl2(aq) + H2 (g) DH° = – 88.0 kj/mol
FeCl2 (t) = FeCl2 (aq) DH° = – 81.7 kj/mol
HCl (g) = HCl (aq) DH° = – 73.3 kj/mol
H2 (g) + Cl2 (g) = 2HCl (g) DH° = – 184.4 kj/mol

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