Na2Se + 2HClO3 → 2NaClO3 + H2Se↑
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- Reaction of sodium selenide and chloric acid
The reaction of sodium selenide and chloric acid yields sodium chlorate and hydrogen selenide. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of sodium selenide and chloric acid
General equation
- Salt of weak acidBrønsted base + Strong acidBrønsted acid ⟶ Salt of strong acidConjugate base + Weak acidConjugate acid
- Salt of volatile acidBrønsted base + Nonvolatile acidBrønsted acid ⟶ Salt of non volatile acidConjugate base + Volatile acidConjugate acid
Oxidation state of each atom
- Reaction of sodium selenide and chloric acid
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Na2Se | Sodium selenide | 1 | Brønsted base | Salt of weak acid Salt of volatile acid |
| HClO3 | Chloric acid | 2 | Brønsted acid | Strong acid Nonvolatile acid |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NaClO3 | Sodium chlorate | 2 | Conjugate base | Salt of strong acid Salt of non volatile acid |
| H2Se | Hydrogen selenide | 1 | Conjugate acid | Weak acid Volatile acid |
Thermodynamic changes
Changes in standard condition (1)
- Reaction of sodium selenide and chloric acid◆
ΔrG −113.3 kJ/mol K 7.07 × 1019 pK −19.85
| 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 | – | −113.3 | – | – |
per 1 mol of | – | −113.3 | – | – |
per 1 mol of | – | −56.65 | – | – |
per 1 mol of | – | −56.65 | – | – |
per 1 mol of | – | −113.3 | – | – |
Changes in standard condition (2)
- Reaction of sodium selenide and chloric acid◆
ΔrG −107.0 kJ/mol K 5.57 × 1018 pK −18.75
| 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 | – | −107.0 | – | – |
per 1 mol of | – | −107.0 | – | – |
per 1 mol of | – | −53.50 | – | – |
per 1 mol of | – | −53.50 | – | – |
per 1 mol of | – | −107.0 | – | – |
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 |
|---|---|---|---|---|
| Na2Se (cr) | -341.4[1] | – | – | – |
| Na2Se (ai) | – | -394.6[1] | – | – |
| Na2Se (cr) 4.5 hydrate | -1741.0[1] | – | – | – |
| Na2Se (cr) 9 hydrate | -3040.1[1] | – | – | – |
| Na2Se (cr) 16 hydrate | -5091.9[1] | – | – | – |
| HClO3 (ai) | -103.97[1] | -7.95[1] | 162.3[1] | – |
* (cr):Crystalline solid, (ai):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 |
|---|---|---|---|---|
| NaClO3 (cr) | -365.774[1] | -262.259[1] | 123.4[1] | – |
| NaClO3 (ai) | -344.09[1] | -269.84[1] | 221.3[1] | – |
| H2Se (g) | 29.7[1] | 15.9[1] | 219.02[1] | 34.73[1] |
| H2Se (ao) | 19.2[1] | 22.2[1] | 163.6[1] | – |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (g):Gas, (ao):Un-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°, -341.4 kJ · mol−1
- ^ ΔfG°, -394.6 kJ · mol−1
- ^ ΔfH°, -1741.0 kJ · mol−1
- ^ ΔfH°, -3040.1 kJ · mol−1
- ^ ΔfH°, -5091.9 kJ · mol−1
- ^ ΔfH°, -103.97 kJ · mol−1
- ^ ΔfG°, -7.95 kJ · mol−1
- ^ S°, 162.3 J · K−1 · mol−1
- ^ ΔfH°, -365.774 kJ · mol−1
- ^ ΔfG°, -262.259 kJ · mol−1
- ^ S°, 123.4 J · K−1 · mol−1
- ^ ΔfH°, -344.09 kJ · mol−1
- ^ ΔfG°, -269.84 kJ · mol−1
- ^ S°, 221.3 J · K−1 · mol−1
- ^ ΔfH°, 29.7 kJ · mol−1
- ^ ΔfG°, 15.9 kJ · mol−1
- ^ S°, 219.02 J · K−1 · mol−1
- ^ Cp°, 34.73 J · K−1 · mol−1
- ^ ΔfH°, 19.2 kJ · mol−1
- ^ ΔfG°, 22.2 kJ · mol−1
- ^ S°, 163.6 J · K−1 · mol−1