2Ba3(PO4)2 + 12HBr → 6BaBr2 + P4O10 + 6H2O
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The reaction of barium phosphate and hydrogen bromide yields barium bromide, tetraphosphorus decaoxide, and water (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 barium phosphate and hydrogen bromide
General equation
- Salt of weak acidBrønsted base + Strong acidBrønsted acid ⟶ Salt of strong acidConjugate base + Acidic oxide + H2OConjugate acid
Oxidation state of each atom
- Reaction of barium phosphate and hydrogen bromide
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Ba3(PO4)2 | Barium phosphate | 2 | Brønsted base | Salt of weak acid |
| HBr | Hydrogen bromide | 12 | Brønsted acid | Strong acid |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| BaBr2 | Barium bromide | 6 | Conjugate base | Salt of strong acid |
| P4O10 | Tetraphosphorus decaoxide | 1 | – | Acidic oxide |
| H2O | Water | 6 | Conjugate acid | Water |
Thermodynamic changes
Changes in standard condition (1)
- Reaction of barium phosphate and hydrogen bromide
| 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 | −622 | – | – | – |
per 1 mol of | −311 | – | – | – |
per 1 mol of | −51.8 | – | – | – |
per 1 mol of | −104 | – | – | – |
per 1 mol of | −622 | – | – | – |
per 1 mol of | −104 | – | – | – |
Changes in standard condition (2)
- Reaction of barium phosphate and hydrogen bromide
| 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 | −680 | – | – | – |
per 1 mol of | −340 | – | – | – |
per 1 mol of | −56.7 | – | – | – |
per 1 mol of | −113 | – | – | – |
per 1 mol of | −680 | – | – | – |
per 1 mol of | −113 | – | – | – |
Changes in aqueous solution
- Reaction of barium phosphate and hydrogen bromide
| 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 | 259 | – | – | – |
per 1 mol of | 130 | – | – | – |
per 1 mol of | 21.6 | – | – | – |
per 1 mol of | 43.2 | – | – | – |
per 1 mol of | 259 | – | – | – |
per 1 mol of | 43.2 | – | – | – |
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 |
|---|---|---|---|---|
| Ba3(PO4)2 (cr) | -4092[1] | – | – | – |
| HBr (g) | -36.40[1] | -53.45[1] | 198.695[1] | 29.142[1] |
| HBr (ai) | -121.55[1] | -103.96[1] | 82.4[1] | -141.8[1] |
* (cr):Crystalline solid, (g):Gas, (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 |
|---|---|---|---|---|
| BaBr2 (cr) | -757.3[1] | -736.8[1] | 146[1] | – |
| BaBr2 (g) | -439[1] | -473[1] | 331[1] | 61.5[1] |
| BaBr2 (ai) | -780.73[1] | -768.68[1] | 174.5[1] | – |
| BaBr2 (cr) 1 hydrate | -1068.2[1] | – | – | – |
| BaBr2 (cr) 2 hydrate | -1366.1[1] | -1230.4[1] | 226[1] | – |
| P4O10 (cr) hexagonal | -2984.0[1] | -2697.7[1] | 228.86[1] | 211.71[1] |
| P4O10 (am) | -3042[1] | – | – | – |
| H2O (cr) | – | – | – | – |
| 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, (g):Gas, (ai):Ionized aqueous solution, (am):Amorphous solid, (l):Liquid
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°, -4092. kJ · mol−1
- ^ ΔfH°, -36.40 kJ · mol−1
- ^ ΔfG°, -53.45 kJ · mol−1
- ^ S°, 198.695 J · K−1 · mol−1
- ^ Cp°, 29.142 J · K−1 · mol−1
- ^ ΔfH°, -121.55 kJ · mol−1
- ^ ΔfG°, -103.96 kJ · mol−1
- ^ S°, 82.4 J · K−1 · mol−1
- ^ Cp°, -141.8 J · K−1 · mol−1
- ^ ΔfH°, -757.3 kJ · mol−1
- ^ ΔfG°, -736.8 kJ · mol−1
- ^ S°, 146. J · K−1 · mol−1
- ^ ΔfH°, -439. kJ · mol−1
- ^ ΔfG°, -473. kJ · mol−1
- ^ S°, 331. J · K−1 · mol−1
- ^ Cp°, 61.5 J · K−1 · mol−1
- ^ ΔfH°, -780.73 kJ · mol−1
- ^ ΔfG°, -768.68 kJ · mol−1
- ^ S°, 174.5 J · K−1 · mol−1
- ^ ΔfH°, -1068.2 kJ · mol−1
- ^ ΔfH°, -1366.1 kJ · mol−1
- ^ ΔfG°, -1230.4 kJ · mol−1
- ^ S°, 226. J · K−1 · mol−1
- ^ ΔfH°, -2984.0 kJ · mol−1
- ^ ΔfG°, -2697.7 kJ · mol−1
- ^ S°, 228.86 J · K−1 · mol−1
- ^ Cp°, 211.71 J · K−1 · mol−1
- ^ ΔfH°, -3042. kJ · mol−1
- ^ ΔfH°, -285.830 kJ · mol−1
- ^ ΔfG°, -237.129 kJ · mol−1
- ^ S°, 69.91 J · K−1 · mol−1
- ^ Cp°, 75.291 J · K−1 · mol−1
- ^ ΔfH°, -241.818 kJ · mol−1
- ^ ΔfG°, -228.572 kJ · mol−1
- ^ S°, 188.825 J · K−1 · mol−1
- ^ Cp°, 33.577 J · K−1 · mol−1