2Ca + 3SiO2 → 2CaSiO3 + Si
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- Reaction of and silicon dioxide
The reaction of and silicon dioxide yields calcium metasilicate and . This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of and silicon dioxide
General equation
- Reaction of reducing species and reducible species
- Reducing speciesReducing agent + Reducible speciesOxidizing agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of and silicon dioxide
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| 2 | Reducing | Reducing | ||
| SiO2 | Silicon dioxide | 3 | Oxidizing | Reducible |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CaSiO3 | Calcium metasilicate | 2 | Oxidized | – |
| 1 | Reduced | – |
Thermodynamic changes
Changes in standard condition (1)
- Reaction of and silicon dioxide◆
ΔrG −529.40 kJ/mol K 5.58 × 1092 pK −92.75
| 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 | −537.06 | −529.40 | −25.69 | 6.63 |
| −268.53 | −264.70 | −12.85 | 3.31 | |
per 1 mol of | −179.02 | −176.47 | −8.563 | 2.21 |
per 1 mol of | −268.53 | −264.70 | −12.85 | 3.31 |
| −537.06 | −529.40 | −25.69 | 6.63 |
Changes in standard condition (2)
- Reaction of and silicon dioxide
| 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 | −532.9 | – | – | – |
| −266.4 | – | – | – | |
per 1 mol of | −177.6 | – | – | – |
per 1 mol of | −266.4 | – | – | – |
| −532.9 | – | – | – |
Changes in standard condition (3)
- Reaction of and silicon dioxide◆
ΔrG −519.5 kJ/mol K 1.03 × 1091 pK −91.01
| 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 | −524.0 | −519.5 | −14.81 | 9.05 |
| −262.0 | −259.8 | −7.405 | 4.53 | |
per 1 mol of | −174.7 | −173.2 | −4.937 | 3.02 |
per 1 mol of | −262.0 | −259.8 | −7.405 | 4.53 |
| −524.0 | −519.5 | −14.81 | 9.05 |
Changes in standard condition (4)
- Reaction of and silicon dioxide
| 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 | −519.8 | – | – | – |
| −259.9 | – | – | – | |
per 1 mol of | −173.3 | – | – | – |
per 1 mol of | −259.9 | – | – | – |
| −519.8 | – | – | – |
Changes in standard condition (5)
- Reaction of and silicon dioxide◆
ΔrG −533.03 kJ/mol K 2.41 × 1093 pK −93.38
| 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 | −541.44 | −533.03 | −28.21 | 7.38 |
| −270.72 | −266.51 | −14.11 | 3.69 | |
per 1 mol of | −180.48 | −177.68 | −9.403 | 2.46 |
per 1 mol of | −270.72 | −266.51 | −14.11 | 3.69 |
| −541.44 | −533.03 | −28.21 | 7.38 |
Changes in standard condition (6)
- Reaction of and silicon dioxide
| 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 | −537.2 | – | – | – |
| −268.6 | – | – | – | |
per 1 mol of | −179.1 | – | – | – |
per 1 mol of | −268.6 | – | – | – |
| −537.2 | – | – | – |
Changes in standard condition (7)
- Reaction of and silicon dioxide◆
ΔrG −523.1 kJ/mol K 4.40 × 1091 pK −91.64
| 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 | −528.4 | −523.1 | −17.33 | 9.80 |
| −264.2 | −261.6 | −8.665 | 4.90 | |
per 1 mol of | −176.1 | −174.4 | −5.777 | 3.27 |
per 1 mol of | −264.2 | −261.6 | −8.665 | 4.90 |
| −528.4 | −523.1 | −17.33 | 9.80 |
Changes in standard condition (8)
- Reaction of and silicon dioxide
| 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 | −524.2 | – | – | – |
| −262.1 | – | – | – | |
per 1 mol of | −174.7 | – | – | – |
per 1 mol of | −262.1 | – | – | – |
| −524.2 | – | – | – |
Changes in standard condition (9)
- Reaction of and silicon dioxide◆
ΔrG −533.54 kJ/mol K 2.97 × 1093 pK −93.47
| 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 | −542.70 | −533.54 | −30.7 | 6.12 |
| −271.35 | −266.77 | −15.3 | 3.06 | |
per 1 mol of | −180.90 | −177.85 | −10.2 | 2.04 |
per 1 mol of | −271.35 | −266.77 | −15.3 | 3.06 |
| −542.70 | −533.54 | −30.7 | 6.12 |
Changes in standard condition (10)
- Reaction of and silicon dioxide
| 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 | −538.5 | – | – | – |
| −269.3 | – | – | – | |
per 1 mol of | −179.5 | – | – | – |
per 1 mol of | −269.3 | – | – | – |
| −538.5 | – | – | – |
Changes in standard condition (11)
- Reaction of and silicon dioxide◆
ΔrG −523.6 kJ/mol K 5.38 × 1091 pK −91.73
| 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 | −529.6 | −523.6 | −19.8 | 8.54 |
| −264.8 | −261.8 | −9.90 | 4.27 | |
per 1 mol of | −176.5 | −174.5 | −6.60 | 2.85 |
per 1 mol of | −264.8 | −261.8 | −9.90 | 4.27 |
| −529.6 | −523.6 | −19.8 | 8.54 |
Changes in standard condition (12)
- Reaction of and silicon dioxide
| 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 | −525.4 | – | – | – |
| −262.7 | – | – | – | |
per 1 mol of | −175.1 | – | – | – |
per 1 mol of | −262.7 | – | – | – |
| −525.4 | – | – | – |
Changes in standard condition (13)
- Reaction of and silicon dioxide◆
ΔrG −547.22 kJ/mol K 7.39 × 1095 pK −95.87
| 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 | −559.41 | −547.22 | −40.9 | 6.7 |
| −279.70 | −273.61 | −20.4 | 3.4 | |
per 1 mol of | −186.47 | −182.41 | −13.6 | 2.2 |
per 1 mol of | −279.70 | −273.61 | −20.4 | 3.4 |
| −559.41 | −547.22 | −40.9 | 6.7 |
Changes in standard condition (14)
- Reaction of and silicon dioxide
| 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 | −555.2 | – | – | – |
| −277.6 | – | – | – | |
per 1 mol of | −185.1 | – | – | – |
per 1 mol of | −277.6 | – | – | – |
| −555.2 | – | – | – |
Changes in standard condition (15)
- Reaction of and silicon dioxide◆
ΔrG −537.3 kJ/mol K 1.35 × 1094 pK −94.13
| 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 | −546.3 | −537.3 | −30.0 | 9.1 |
| −273.1 | −268.6 | −15.0 | 4.5 | |
per 1 mol of | −182.1 | −179.1 | −10.0 | 3.0 |
per 1 mol of | −273.1 | −268.6 | −15.0 | 4.5 |
| −546.3 | −537.3 | −30.0 | 9.1 |
Changes in standard condition (16)
- Reaction of and silicon dioxide
| 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 | −542.1 | – | – | – |
| −271.1 | – | – | – | |
per 1 mol of | −180.7 | – | – | – |
per 1 mol of | −271.1 | – | – | – |
| −542.1 | – | – | – |
Changes in aqueous solution
- Reaction of and silicon dioxide
| 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 | −578.9 | – | – | – |
| −289.4 | – | – | – | |
per 1 mol of | −193.0 | – | – | – |
per 1 mol of | −289.4 | – | – | – |
| −578.9 | – | – | – |
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 |
|---|---|---|---|---|
| (cr) α | 0[1] | 0[1] | 41.42[1] | 25.31[1] |
| (g) | 178.2[1] | 144.3[1] | 154.884[1] | 20.786[1] |
| SiO2 (cr) α-quartz | -910.94[1] | -856.64[1] | 41.84[1] | 44.43[1] |
| SiO2 (cr) α-cristobalite | -909.48[1] | -855.43[1] | 42.68[1] | 44.18[1] |
| SiO2 (cr) α-tridymite | -909.06[1] | -855.26[1] | 43.5[1] | 44.60[1] |
| SiO2 (am) | -903.49[1] | -850.70[1] | 46.9[1] | 44.4[1] |
| SiO2 (g) | -322[1] | – | – | – |
| SiO2 (ao) | -897.0[1] | – | – | – |
* (cr):Crystalline solid, (g):Gas, (am):Amorphous solid, (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 |
|---|---|---|---|---|
| CaSiO3 (cr) wollastonite | -1634.94[1] | -1549.66[1] | 81.92[1] | 85.27[1] |
| CaSiO3 (cr) pseudowollastonite | -1628.4[1] | -1544.7[1] | 87.36[1] | 86.48[1] |
| CaSiO3 (vit) | -1601.01[1] | – | – | – |
| (cr) | 0[1] | 0[1] | 18.83[1] | 20.00[1] |
| (am) | 4.2[1] | – | – | – |
| (g) | 455.6[1] | 411.3[1] | 167.97[1] | 22.251[1] |
* (cr):Crystalline solid, (vit):Vitreous liquid, (am):Amorphous solid, (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)
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 41.42 J · K−1 · mol−1
- ^ Cp°, 25.31 J · K−1 · mol−1
- ^ ΔfH°, 178.2 kJ · mol−1
- ^ ΔfG°, 144.3 kJ · mol−1
- ^ S°, 154.884 J · K−1 · mol−1
- ^ Cp°, 20.786 J · K−1 · mol−1
- ^ ΔfH°, -910.94 kJ · mol−1
- ^ ΔfG°, -856.64 kJ · mol−1
- ^ S°, 41.84 J · K−1 · mol−1
- ^ Cp°, 44.43 J · K−1 · mol−1
- ^ ΔfH°, -909.48 kJ · mol−1
- ^ ΔfG°, -855.43 kJ · mol−1
- ^ S°, 42.68 J · K−1 · mol−1
- ^ Cp°, 44.18 J · K−1 · mol−1
- ^ ΔfH°, -909.06 kJ · mol−1
- ^ ΔfG°, -855.26 kJ · mol−1
- ^ S°, 43.5 J · K−1 · mol−1
- ^ Cp°, 44.60 J · K−1 · mol−1
- ^ ΔfH°, -903.49 kJ · mol−1
- ^ ΔfG°, -850.70 kJ · mol−1
- ^ S°, 46.9 J · K−1 · mol−1
- ^ Cp°, 44.4 J · K−1 · mol−1
- ^ ΔfH°, -322. kJ · mol−1
- ^ ΔfH°, -897.0 kJ · mol−1
- ^ ΔfH°, -1634.94 kJ · mol−1
- ^ ΔfG°, -1549.66 kJ · mol−1
- ^ S°, 81.92 J · K−1 · mol−1
- ^ Cp°, 85.27 J · K−1 · mol−1
- ^ ΔfH°, -1628.4 kJ · mol−1
- ^ ΔfG°, -1544.7 kJ · mol−1
- ^ S°, 87.36 J · K−1 · mol−1
- ^ Cp°, 86.48 J · K−1 · mol−1
- ^ ΔfH°, -1601.01 kJ · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 18.83 J · K−1 · mol−1
- ^ Cp°, 20.00 J · K−1 · mol−1
- ^ ΔfH°, 4.2 kJ · mol−1
- ^ ΔfH°, 455.6 kJ · mol−1
- ^ ΔfG°, 411.3 kJ · mol−1
- ^ S°, 167.97 J · K−1 · mol−1
- ^ Cp°, 22.251 J · K−1 · mol−1