HCN

Formula : HCN

Dernière mise à jour le 25.01.2021

THERMODYNAMICS

Individual properties (298.15 K)
M
g·mol-1
 V°
cm3·mol-1
 ΔGºf
J·mol-1
 ΔHºf
J·mol-1
 Sº
J·mol-1·k-1
 CP
J·mol-1·K-1
27.025 45.909 (Ref.: 93sho/mck) Shock, E.L., and McKinnon, W.B., 1993, Hydrothermal Processing of Cometary Volatiles--Applications to Triton: Icarus, v. 106, pp. 464-477. 119662 (Ref.: 93sho/mck) Shock, E.L., and McKinnon, W.B., 1993, Hydrothermal Processing of Cometary Volatiles--Applications to Triton: Icarus, v. 106, pp. 464-477. 107080 (Ref.: Internal calculation) 124.683 (Ref.: 93sho/mck) Shock, E.L., and McKinnon, W.B., 1993, Hydrothermal Processing of Cometary Volatiles--Applications to Triton: Icarus, v. 106, pp. 464-477. 166.00 (Ref.: 93sho/mck) Shock, E.L., and McKinnon, W.B., 1993, Hydrothermal Processing of Cometary Volatiles--Applications to Triton: Icarus, v. 106, pp. 464-477.
HKF coefficients
a1·10
J·mol-1·bar-1
 a2·10-2
J·mol-1
 a3
J·K·mol-1·bar-1
 a4·10-4
J·K·mol-1
 c1
J·mol-1·K-1
 c2·10-4
J·K·mol-1
 ω·10-5
J·mol-1
33.5067 49.2478 4.7221 -13.6629 121.3110 21.9911 -0.4657
Reaction properties

CN- + H+ ⇌ HCN

298.15 K, 1 bar log10K: 9.24 ΔH°r:-43612 J·mol-1 (Ref.: 93sho/mck) Shock, E.L., and McKinnon, W.B., 1993, Hydrothermal Processing of Cometary Volatiles--Applications to Triton: Icarus, v. 106, pp. 464-477.
T(°C) 0 25 60 100 150 200 250 300
log10K 9.99 9.24 8.50 7.96 7.57 7.41 7.46 7.72
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
679.841548 0.108361 -36475.823938 -245.840175 2466130.897790