Input interpretation
![S mixed sulfur + Ga gallium ⟶ Ga_2S_3 gallium(III) sulfide](../image_source/d767adbd4f0218b749ac58b6a1c0fcb0.png)
S mixed sulfur + Ga gallium ⟶ Ga_2S_3 gallium(III) sulfide
Balanced equation
![Balance the chemical equation algebraically: S + Ga ⟶ Ga_2S_3 Add stoichiometric coefficients, c_i, to the reactants and products: c_1 S + c_2 Ga ⟶ c_3 Ga_2S_3 Set the number of atoms in the reactants equal to the number of atoms in the products for S and Ga: S: | c_1 = 3 c_3 Ga: | c_2 = 2 c_3 Since the coefficients are relative quantities and underdetermined, choose a coefficient to set arbitrarily. To keep the coefficients small, the arbitrary value is ordinarily one. For instance, set c_3 = 1 and solve the system of equations for the remaining coefficients: c_1 = 3 c_2 = 2 c_3 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 3 S + 2 Ga ⟶ Ga_2S_3](../image_source/2473a7105245cefd6e98bdc2d49eb97f.png)
Balance the chemical equation algebraically: S + Ga ⟶ Ga_2S_3 Add stoichiometric coefficients, c_i, to the reactants and products: c_1 S + c_2 Ga ⟶ c_3 Ga_2S_3 Set the number of atoms in the reactants equal to the number of atoms in the products for S and Ga: S: | c_1 = 3 c_3 Ga: | c_2 = 2 c_3 Since the coefficients are relative quantities and underdetermined, choose a coefficient to set arbitrarily. To keep the coefficients small, the arbitrary value is ordinarily one. For instance, set c_3 = 1 and solve the system of equations for the remaining coefficients: c_1 = 3 c_2 = 2 c_3 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 3 S + 2 Ga ⟶ Ga_2S_3
Structures
![+ ⟶](../image_source/ac52cda4b53a787f2cdb877f00b28207.png)
+ ⟶
Names
![mixed sulfur + gallium ⟶ gallium(III) sulfide](../image_source/d39e27bf0ae5e74a95d381bf11cf8588.png)
mixed sulfur + gallium ⟶ gallium(III) sulfide
Equilibrium constant
![Construct the equilibrium constant, K, expression for: S + Ga ⟶ Ga_2S_3 Plan: • Balance the chemical equation. • Determine the stoichiometric numbers. • Assemble the activity expression for each chemical species. • Use the activity expressions to build the equilibrium constant expression. Write the balanced chemical equation: 3 S + 2 Ga ⟶ Ga_2S_3 Assign stoichiometric numbers, ν_i, using the stoichiometric coefficients, c_i, from the balanced chemical equation in the following manner: ν_i = -c_i for reactants and ν_i = c_i for products: chemical species | c_i | ν_i S | 3 | -3 Ga | 2 | -2 Ga_2S_3 | 1 | 1 Assemble the activity expressions accounting for the state of matter and ν_i: chemical species | c_i | ν_i | activity expression S | 3 | -3 | ([S])^(-3) Ga | 2 | -2 | ([Ga])^(-2) Ga_2S_3 | 1 | 1 | [Ga2S3] The equilibrium constant symbol in the concentration basis is: K_c Mulitply the activity expressions to arrive at the K_c expression: Answer: | | K_c = ([S])^(-3) ([Ga])^(-2) [Ga2S3] = ([Ga2S3])/(([S])^3 ([Ga])^2)](../image_source/a8c04e01944c0e61bd1bbd08be8d9d63.png)
Construct the equilibrium constant, K, expression for: S + Ga ⟶ Ga_2S_3 Plan: • Balance the chemical equation. • Determine the stoichiometric numbers. • Assemble the activity expression for each chemical species. • Use the activity expressions to build the equilibrium constant expression. Write the balanced chemical equation: 3 S + 2 Ga ⟶ Ga_2S_3 Assign stoichiometric numbers, ν_i, using the stoichiometric coefficients, c_i, from the balanced chemical equation in the following manner: ν_i = -c_i for reactants and ν_i = c_i for products: chemical species | c_i | ν_i S | 3 | -3 Ga | 2 | -2 Ga_2S_3 | 1 | 1 Assemble the activity expressions accounting for the state of matter and ν_i: chemical species | c_i | ν_i | activity expression S | 3 | -3 | ([S])^(-3) Ga | 2 | -2 | ([Ga])^(-2) Ga_2S_3 | 1 | 1 | [Ga2S3] The equilibrium constant symbol in the concentration basis is: K_c Mulitply the activity expressions to arrive at the K_c expression: Answer: | | K_c = ([S])^(-3) ([Ga])^(-2) [Ga2S3] = ([Ga2S3])/(([S])^3 ([Ga])^2)
Rate of reaction
![Construct the rate of reaction expression for: S + Ga ⟶ Ga_2S_3 Plan: • Balance the chemical equation. • Determine the stoichiometric numbers. • Assemble the rate term for each chemical species. • Write the rate of reaction expression. Write the balanced chemical equation: 3 S + 2 Ga ⟶ Ga_2S_3 Assign stoichiometric numbers, ν_i, using the stoichiometric coefficients, c_i, from the balanced chemical equation in the following manner: ν_i = -c_i for reactants and ν_i = c_i for products: chemical species | c_i | ν_i S | 3 | -3 Ga | 2 | -2 Ga_2S_3 | 1 | 1 The rate term for each chemical species, B_i, is 1/ν_i(Δ[B_i])/(Δt) where [B_i] is the amount concentration and t is time: chemical species | c_i | ν_i | rate term S | 3 | -3 | -1/3 (Δ[S])/(Δt) Ga | 2 | -2 | -1/2 (Δ[Ga])/(Δt) Ga_2S_3 | 1 | 1 | (Δ[Ga2S3])/(Δt) (for infinitesimal rate of change, replace Δ with d) Set the rate terms equal to each other to arrive at the rate expression: Answer: | | rate = -1/3 (Δ[S])/(Δt) = -1/2 (Δ[Ga])/(Δt) = (Δ[Ga2S3])/(Δt) (assuming constant volume and no accumulation of intermediates or side products)](../image_source/c46be63481f1b35d2993533226f7711d.png)
Construct the rate of reaction expression for: S + Ga ⟶ Ga_2S_3 Plan: • Balance the chemical equation. • Determine the stoichiometric numbers. • Assemble the rate term for each chemical species. • Write the rate of reaction expression. Write the balanced chemical equation: 3 S + 2 Ga ⟶ Ga_2S_3 Assign stoichiometric numbers, ν_i, using the stoichiometric coefficients, c_i, from the balanced chemical equation in the following manner: ν_i = -c_i for reactants and ν_i = c_i for products: chemical species | c_i | ν_i S | 3 | -3 Ga | 2 | -2 Ga_2S_3 | 1 | 1 The rate term for each chemical species, B_i, is 1/ν_i(Δ[B_i])/(Δt) where [B_i] is the amount concentration and t is time: chemical species | c_i | ν_i | rate term S | 3 | -3 | -1/3 (Δ[S])/(Δt) Ga | 2 | -2 | -1/2 (Δ[Ga])/(Δt) Ga_2S_3 | 1 | 1 | (Δ[Ga2S3])/(Δt) (for infinitesimal rate of change, replace Δ with d) Set the rate terms equal to each other to arrive at the rate expression: Answer: | | rate = -1/3 (Δ[S])/(Δt) = -1/2 (Δ[Ga])/(Δt) = (Δ[Ga2S3])/(Δt) (assuming constant volume and no accumulation of intermediates or side products)
Chemical names and formulas
![| mixed sulfur | gallium | gallium(III) sulfide formula | S | Ga | Ga_2S_3 name | mixed sulfur | gallium | gallium(III) sulfide IUPAC name | sulfur | gallium | thioxo-(thioxogallanylthio)gallane](../image_source/94e6be24498c237b95d6e2d357f98052.png)
| mixed sulfur | gallium | gallium(III) sulfide formula | S | Ga | Ga_2S_3 name | mixed sulfur | gallium | gallium(III) sulfide IUPAC name | sulfur | gallium | thioxo-(thioxogallanylthio)gallane
Substance properties
![| mixed sulfur | gallium | gallium(III) sulfide molar mass | 32.06 g/mol | 69.723 g/mol | 235.6 g/mol phase | solid (at STP) | solid (at STP) | solid (at STP) melting point | 112.8 °C | 29.8 °C | 1095 °C boiling point | 444.7 °C | 2403 °C | density | 2.07 g/cm^3 | 5.904 g/cm^3 | 3.65 g/cm^3 solubility in water | | insoluble | dynamic viscosity | | 0.0019 Pa s (at 53 °C) |](../image_source/92e5219d353608c8a9d2909f3a352280.png)
| mixed sulfur | gallium | gallium(III) sulfide molar mass | 32.06 g/mol | 69.723 g/mol | 235.6 g/mol phase | solid (at STP) | solid (at STP) | solid (at STP) melting point | 112.8 °C | 29.8 °C | 1095 °C boiling point | 444.7 °C | 2403 °C | density | 2.07 g/cm^3 | 5.904 g/cm^3 | 3.65 g/cm^3 solubility in water | | insoluble | dynamic viscosity | | 0.0019 Pa s (at 53 °C) |
Units