K2SO4 + H2S 🔥→ KHSO4 + KHS
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The reaction of potassium sulfate and hydrogen sulfide yields potassium hydrogensulfate and potassium hydrogensulfide (Other reactions are here). This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of potassium sulfate and hydrogen sulfide
General equation
Oxidation state of each atom
- Reaction of potassium sulfate and hydrogen sulfide
Reactants
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
K2SO4 | Potassium sulfate | 1 | Brønsted base | Salt |
H2S | Hydrogen sulfide | 1 | Brønsted acid | Acid |
Products
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
KHSO4 | Potassium hydrogensulfate | 1 | Conjugate acid base | Acid salt |
KHS | Potassium hydrogensulfide | 1 | Conjugate acid base | Acid salt |
Thermodynamic changes
Changes in standard condition
- Reaction of potassium sulfate and hydrogen sulfide
Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
---|---|---|---|---|
per 1 mol of Equation | 32.7 | – | – | – |
per 1 mol of | 32.7 | – | – | – |
per 1 mol of | 32.7 | – | – | – |
per 1 mol of | 32.7 | – | – | – |
per 1 mol of | 32.7 | – | – | – |
Changes in aqueous solution
- Reaction of potassium sulfate and hydrogen sulfide◆
ΔrG 28.53 kJ/mol K 0.10 × 10−4 pK 5.00
Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
---|---|---|---|---|
per 1 mol of Equation | 44.1 | 28.53 | 54 | – |
per 1 mol of | 44.1 | 28.53 | 54 | – |
per 1 mol of | 44.1 | 28.53 | 54 | – |
per 1 mol of | 44.1 | 28.53 | 54 | – |
per 1 mol of | 44.1 | 28.53 | 54 | – |
Thermodynamic data of reactants
Chemical formula | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
---|---|---|---|---|
K2SO4 (cr) | -1437.79[1] | -1321.37[1] | 175.56[1] | 131.46[1] |
K2SO4 (g) | -1096[1] | -1033[1] | 364[1] | 108.8[1] |
K2SO4 (ai) | -1414.02[1] | -1311.07[1] | 225.1[1] | -251[1] |
H2S (g) | -20.63[1] | -33.56[1] | 205.79[1] | 34.23[1] |
H2S (ao) | -39.7[1] | -27.83[1] | 121[1] | – |
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution
Thermodynamic data of products
Chemical formula | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
---|---|---|---|---|
KHSO4 (cr) | -1160.6[1] | -1031.3[1] | 138.1[1] | – |
KHSO4 (ai) | -1139.72[1] | -1039.18[1] | 234.3[1] | -63[1] |
KHS (cr) | -265.10[1] | – | – | 75.31[1] |
KHS (ai) | -269.9[1] | -271.19[1] | 165.3[1] | – |
KHS (cr) 0.25 hydrate | -337.2[1] | – | – | – |
* (cr):Crystalline solid, (ai):Ionized aqueous solution
References
List of references
- 1Janiel J. Reed (1989)The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI UnitsNational Institute of Standards and Technology (NIST)
- ^ ΔfH°, -1437.79 kJ · mol−1
- ^ ΔfG°, -1321.37 kJ · mol−1
- ^ S°, 175.56 J · K−1 · mol−1
- ^ Cp°, 131.46 J · K−1 · mol−1
- ^ ΔfH°, -1096. kJ · mol−1
- ^ ΔfG°, -1033. kJ · mol−1
- ^ S°, 364. J · K−1 · mol−1
- ^ Cp°, 108.8 J · K−1 · mol−1
- ^ ΔfH°, -1414.02 kJ · mol−1
- ^ ΔfG°, -1311.07 kJ · mol−1
- ^ S°, 225.1 J · K−1 · mol−1
- ^ Cp°, -251. J · K−1 · mol−1
- ^ ΔfH°, -20.63 kJ · mol−1
- ^ ΔfG°, -33.56 kJ · mol−1
- ^ S°, 205.79 J · K−1 · mol−1
- ^ Cp°, 34.23 J · K−1 · mol−1
- ^ ΔfH°, -39.7 kJ · mol−1
- ^ ΔfG°, -27.83 kJ · mol−1
- ^ S°, 121. J · K−1 · mol−1
- ^ ΔfH°, -1160.6 kJ · mol−1
- ^ ΔfG°, -1031.3 kJ · mol−1
- ^ S°, 138.1 J · K−1 · mol−1
- ^ ΔfH°, -1139.72 kJ · mol−1
- ^ ΔfG°, -1039.18 kJ · mol−1
- ^ S°, 234.3 J · K−1 · mol−1
- ^ Cp°, -63. J · K−1 · mol−1
- ^ ΔfH°, -265.10 kJ · mol−1
- ^ Cp°, 75.31 J · K−1 · mol−1
- ^ ΔfH°, -269.9 kJ · mol−1
- ^ ΔfG°, -271.19 kJ · mol−1
- ^ S°, 165.3 J · K−1 · mol−1
- ^ ΔfH°, -337.2 kJ · mol−1