2NH4SCN + 6H2O ๐งโกโ (NH4)2SO3 + NH4HCO3 + HSCN + 3H2โ
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- Electrolysis of aqueous ammonium thiocyanate with water as non-redox agent
- 2NH4SCNAmmonium thiocyanate + 6H2OWater(NH4)2SO3Ammonium sulfite + NH4HCO3Ammonium hydrogencarbonate + HSCNThiocyanic acid + 3โ๐งโกโถ
Electrolysis of aqueous ammonium thiocyanate yields ammonium sulfite, ammonium hydrogencarbonate, thiocyanic acid, and (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Electrolysis of aqueous ammonium thiocyanate with water as non-redox agent
- 2NH4SCNAmmonium thiocyanate + 6H2OWater(NH4)2SO3Ammonium sulfite + NH4HCO3Ammonium hydrogencarbonate + HSCNThiocyanic acid + 3โ๐งโกโถ
General equation
- Electrolysis of aqueous solution with water as non redox agent
- Miscible with water/Very soluble in water/Soluble in waterSelf redox agent + H2ONon-redox agent๐งโกโถ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Electrolysis of aqueous ammonium thiocyanate with water as non-redox agent
Reactants
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
NH4SCN | Ammonium thiocyanate | 2 | Reducing | Very soluble in water |
H2O | Water | 6 | โ | Water |
Products
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
(NH4)2SO3 | Ammonium sulfite | 1 | Oxidized | โ |
NH4HCO3 | Ammonium hydrogencarbonate | 1 | โ | โ |
HSCN | Thiocyanic acid | 1 | โ | โ |
3 | โ | โ |
Thermodynamic changes
Changes in aqueous solution (1)
- Electrolysis of aqueous ammonium thiocyanate with water as non-redox agentโ
ฮrG 182.5 kJ/mol K 0.11 ร 10โ31 pK 31.97
Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
---|---|---|---|---|
per 1 mol of Equation | โ | 182.5 | โ | โ |
per 1 mol of | โ | 91.25 | โ | โ |
per 1 mol of | โ | 30.42 | โ | โ |
per 1 mol of | โ | 182.5 | โ | โ |
per 1 mol of | โ | 182.5 | โ | โ |
per 1 mol of | โ | 182.5 | โ | โ |
โ | 60.83 | โ | โ |
Changes in aqueous solution (2)
- Electrolysis of aqueous ammonium thiocyanate with water as non-redox agentโ
ฮrG 235.3 kJ/mol K 0.60 ร 10โ41 pK 41.22
Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
---|---|---|---|---|
per 1 mol of Equation | โ | 235.3 | โ | โ |
per 1 mol of | โ | 117.7 | โ | โ |
per 1 mol of | โ | 39.22 | โ | โ |
per 1 mol of | โ | 235.3 | โ | โ |
per 1 mol of | โ | 235.3 | โ | โ |
per 1 mol of | โ | 235.3 | โ | โ |
โ | 78.43 | โ | โ |
Changes in aqueous solution (3)
- Electrolysis of aqueous ammonium thiocyanate with water as non-redox agent
Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
---|---|---|---|---|
per 1 mol of Equation | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
โ | โ | โ | โ |
Changes in aqueous solution (4)
- Electrolysis of aqueous ammonium thiocyanate with water as non-redox agent
Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
---|---|---|---|---|
per 1 mol of Equation | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
โ | โ | โ | โ |
Changes in aqueous solution (5)
- Electrolysis of aqueous ammonium thiocyanate with water as non-redox agentโ
ฮrG 177.6 kJ/mol K 0.77 ร 10โ31 pK 31.11
Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
---|---|---|---|---|
per 1 mol of Equation | 178.7 | 177.6 | 3.6 | โ |
per 1 mol of | 89.35 | 88.80 | 1.8 | โ |
per 1 mol of | 29.78 | 29.60 | 0.60 | โ |
per 1 mol of | 178.7 | 177.6 | 3.6 | โ |
per 1 mol of | 178.7 | 177.6 | 3.6 | โ |
per 1 mol of | 178.7 | 177.6 | 3.6 | โ |
59.57 | 59.20 | 1.2 | โ |
Changes in aqueous solution (6)
- Electrolysis of aqueous ammonium thiocyanate with water as non-redox agentโ
ฮrG 230.4 kJ/mol K 0.43 ร 10โ40 pK 40.36
Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
---|---|---|---|---|
per 1 mol of Equation | 166.1 | 230.4 | 1343 | โ |
per 1 mol of | 83.05 | 115.2 | 671.5 | โ |
per 1 mol of | 27.68 | 38.40 | 223.8 | โ |
per 1 mol of | 166.1 | 230.4 | 1343 | โ |
per 1 mol of | 166.1 | 230.4 | 1343 | โ |
per 1 mol of | 166.1 | 230.4 | 1343 | โ |
55.37 | 76.80 | 447.7 | โ |
Changes in aqueous solution (7)
- Electrolysis of aqueous ammonium thiocyanate with water as non-redox agent
Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
---|---|---|---|---|
per 1 mol of Equation | 181.5 | โ | โ | โ |
per 1 mol of | 90.75 | โ | โ | โ |
per 1 mol of | 30.25 | โ | โ | โ |
per 1 mol of | 181.5 | โ | โ | โ |
per 1 mol of | 181.5 | โ | โ | โ |
per 1 mol of | 181.5 | โ | โ | โ |
60.50 | โ | โ | โ |
Changes in aqueous solution (8)
- Electrolysis of aqueous ammonium thiocyanate with water as non-redox agent
Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
---|---|---|---|---|
per 1 mol of Equation | 168.9 | โ | โ | โ |
per 1 mol of | 84.45 | โ | โ | โ |
per 1 mol of | 28.15 | โ | โ | โ |
per 1 mol of | 168.9 | โ | โ | โ |
per 1 mol of | 168.9 | โ | โ | โ |
per 1 mol of | 168.9 | โ | โ | โ |
56.30 | โ | โ | โ |
Thermodynamic data of reactants
Chemical formula | Standard enthalpy of formation ฮfHยฐ kJ ยท molโ1 | Standard Gibbs energy of formation ฮfGยฐ kJ ยท molโ1 | Standard molar entropy Sยฐ J ยท Kโ1 ยท molโ1 | Standard molar heat capacity at constant pressure Cpยฐ J ยท Kโ1 ยท molโ1 |
---|---|---|---|---|
NH4SCN (cr) | -78.7[1] | โ | โ | โ |
NH4SCN (ai) | -56.07[1] | 13.40[1] | 257.7[1] | 39.7[1] |
H2O (cr) | โ | โ | โ | โ |
H2O (l) | -285.830[1] | -237.129[1] | 69.91[1] | 75.291[1] |
H2O (g) | -241.818[1] | -228.572[1] | 188.825[1] | 33.577[1] |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (l):Liquid, (g):Gas
Thermodynamic data of products
Chemical formula | Standard enthalpy of formation ฮfHยฐ kJ ยท molโ1 | Standard Gibbs energy of formation ฮfGยฐ kJ ยท molโ1 | Standard molar entropy Sยฐ J ยท Kโ1 ยท molโ1 | Standard molar heat capacity at constant pressure Cpยฐ J ยท Kโ1 ยท molโ1 |
---|---|---|---|---|
(NH4)2SO3 (cr) | -885.3[1] | โ | โ | โ |
(NH4)2SO3 (ai) | -900.4[1] | -645.0[1] | 197.5[1] | โ |
(NH4)2SO3 (cr) 1 hydrate | -1187.4[1] | โ | โ | โ |
NH4HCO3 (cr) | -849.4[1] | -665.9[1] | 120.9[1] | โ |
NH4HCO3 (ai) | -824.50[1] | -666.07[1] | 204.6[1] | โ |
NH4HCO3 (aq) | -821.7[1] | โ | โ | โ |
HSCN (ai) | 76.44[1] | 92.71[1] | 144.3[1] | -40.2[1] |
HSCN (ao) | โ | 97.56[1] | โ | โ |
(g) | 0[1] | 0[1] | 130.684[1] | 28.824[1] |
(ao) | -4.2[1] | 17.6[1] | 577[1] | โ |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (aq):Aqueous solution, (ao):Un-ionized aqueous solution, (g):Gas
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)
- ^ ฮfHยฐ, -78.7 kJ ยท molโ1
- ^ ฮfHยฐ, -56.07 kJ ยท molโ1
- ^ ฮfGยฐ, 13.40 kJ ยท molโ1
- ^ Sยฐ, 257.7 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 39.7 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -285.830 kJ ยท molโ1
- ^ ฮfGยฐ, -237.129 kJ ยท molโ1
- ^ Sยฐ, 69.91 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 75.291 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -241.818 kJ ยท molโ1
- ^ ฮfGยฐ, -228.572 kJ ยท molโ1
- ^ Sยฐ, 188.825 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 33.577 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -885.3 kJ ยท molโ1
- ^ ฮfHยฐ, -900.4 kJ ยท molโ1
- ^ ฮfGยฐ, -645.0 kJ ยท molโ1
- ^ Sยฐ, 197.5 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1187.4 kJ ยท molโ1
- ^ ฮfHยฐ, -849.4 kJ ยท molโ1
- ^ ฮfGยฐ, -665.9 kJ ยท molโ1
- ^ Sยฐ, 120.9 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -824.50 kJ ยท molโ1
- ^ ฮfGยฐ, -666.07 kJ ยท molโ1
- ^ Sยฐ, 204.6 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -821.7 kJ ยท molโ1
- ^ ฮfHยฐ, 76.44 kJ ยท molโ1
- ^ ฮfGยฐ, 92.71 kJ ยท molโ1
- ^ Sยฐ, 144.3 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, -40.2 J ยท Kโ1 ยท molโ1
- ^ ฮfGยฐ, 97.56 kJ ยท molโ1
- ^ ฮfHยฐ, 0 kJ ยท molโ1
- ^ ฮfGยฐ, 0 kJ ยท molโ1
- ^ Sยฐ, 130.684 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 28.824 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -4.2 kJ ยท molโ1
- ^ ฮfGยฐ, 17.6 kJ ยท molโ1
- ^ Sยฐ, 577 J ยท Kโ1 ยท molโ1