3Ca(ClO4)2 + 2Na3AsO4 💧→ Ca3(AsO4)2↓ + 6NaClO4
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The reaction of calcium perchlorate and sodium arsenate yields calcium arsenate and sodium perchlorate. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of calcium perchlorate and sodium arsenate
General equation
- Precipitation reaction
- Miscible with water/Very soluble in water/Soluble in waterLewis acid + Miscible with water/Very soluble in water/Soluble in waterLewis base💧⟶ Insoluble in water/Very slightly soluble in water/Slightly soluble in waterLewis conjugate + Product(Non-redox product)
Oxidation state of each atom
- Reaction of calcium perchlorate and sodium arsenate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Ca(ClO4)2 | Calcium perchlorate | 3 | Lewis acid | Very soluble in water |
| Na3AsO4 | Sodium arsenate | 2 | Lewis base | Soluble in water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Ca3(AsO4)2 | Calcium arsenate | 1 | Lewis conjugate | Very slightly soluble in water |
| NaClO4 | Sodium perchlorate | 6 | Non-redox product | – |
Thermodynamic changes
Changes in standard condition
- Reaction of calcium perchlorate and sodium arsenate
- 3Ca(ClO4)2Crystalline solid + 2Na3AsO4Crystalline solidCa3(AsO4)2↓Crystalline solid + 6NaClO4Crystalline solid💧⟶
| 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 | −308 | – | – | – |
per 1 mol of | −103 | – | – | – |
per 1 mol of | −154 | – | – | – |
per 1 mol of | −308 | – | – | – |
per 1 mol of | −51.3 | – | – | – |
Changes in aqueous solution
- Reaction of calcium perchlorate and sodium arsenate◆
ΔrG −105.3 kJ/mol K 2.80 × 1018 pK −18.45 - 3Ca(ClO4)2Ionized aqueous solution + 2Na3AsO4Ionized aqueous solutionCa3(AsO4)2↓Crystalline solid + 6NaClO4Ionized aqueous solution💧⟶
| 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 | 106.1 | −105.3 | 711 | – |
per 1 mol of | 35.37 | −35.10 | 237 | – |
per 1 mol of | 53.05 | −52.65 | 356 | – |
per 1 mol of | 106.1 | −105.3 | 711 | – |
per 1 mol of | 17.68 | −17.55 | 119 | – |
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 |
|---|---|---|---|---|
| Ca(ClO4)2 (cr) | -736.76[1] | – | – | – |
| Ca(ClO4)2 (ai) | -801.49[1] | -570.62[1] | 310.9[1] | – |
| Ca(ClO4)2 (cr) 4 hydrate | -1948.9[1] | -1476.47[1] | 433.5[1] | – |
| Na3AsO4 (cr) | -1540[1] | – | – | – |
| Na3AsO4 (ai) | -1608.50[1] | -1434.13[1] | 14.2[1] | – |
| Na3AsO4 (cr) 12 hydrate | -5092[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 |
|---|---|---|---|---|
| Ca3(AsO4)2 (cr) | -3298.7[1] | -3063.0[1] | 226[1] | – |
| Ca3(AsO4)2 (cr) hydrated precipitate | -3343[1] | – | – | – |
| NaClO4 (cr) | -383.30[1] | -254.85[1] | 142.3[1] | – |
| NaClO4 (ai) | -369.45[1] | -270.41[1] | 241.0[1] | – |
| NaClO4 (cr) 1 hydrate | -677.77[1] | -494.29[1] | 190.8[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°, -736.76 kJ · mol−1
- ^ ΔfH°, -801.49 kJ · mol−1
- ^ ΔfG°, -570.62 kJ · mol−1
- ^ S°, 310.9 J · K−1 · mol−1
- ^ ΔfH°, -1948.9 kJ · mol−1
- ^ ΔfG°, -1476.47 kJ · mol−1
- ^ S°, 433.5 J · K−1 · mol−1
- ^ ΔfH°, -1540. kJ · mol−1
- ^ ΔfH°, -1608.50 kJ · mol−1
- ^ ΔfG°, -1434.13 kJ · mol−1
- ^ S°, 14.2 J · K−1 · mol−1
- ^ ΔfH°, -5092. kJ · mol−1
- ^ ΔfH°, -3298.7 kJ · mol−1
- ^ ΔfG°, -3063.0 kJ · mol−1
- ^ S°, 226. J · K−1 · mol−1
- ^ ΔfH°, -3343. kJ · mol−1
- ^ ΔfH°, -383.30 kJ · mol−1
- ^ ΔfG°, -254.85 kJ · mol−1
- ^ S°, 142.3 J · K−1 · mol−1
- ^ ΔfH°, -369.45 kJ · mol−1
- ^ ΔfG°, -270.41 kJ · mol−1
- ^ S°, 241.0 J · K−1 · mol−1
- ^ ΔfH°, -677.77 kJ · mol−1
- ^ ΔfG°, -494.29 kJ · mol−1
- ^ S°, 190.8 J · K−1 · mol−1