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H2SO4 + Sc2O3 = H2O + Sc2(SO4)3

Input interpretation

H_2SO_4 sulfuric acid + Sc_2O_3 scandium(III) oxide ⟶ H_2O water + Sc2(SO4)3
H_2SO_4 sulfuric acid + Sc_2O_3 scandium(III) oxide ⟶ H_2O water + Sc2(SO4)3

Balanced equation

Balance the chemical equation algebraically: H_2SO_4 + Sc_2O_3 ⟶ H_2O + Sc2(SO4)3 Add stoichiometric coefficients, c_i, to the reactants and products: c_1 H_2SO_4 + c_2 Sc_2O_3 ⟶ c_3 H_2O + c_4 Sc2(SO4)3 Set the number of atoms in the reactants equal to the number of atoms in the products for H, O, S and Sc: H: | 2 c_1 = 2 c_3 O: | 4 c_1 + 3 c_2 = c_3 + 12 c_4 S: | c_1 = 3 c_4 Sc: | 2 c_2 = 2 c_4 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_2 = 1 and solve the system of equations for the remaining coefficients: c_1 = 3 c_2 = 1 c_3 = 3 c_4 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 3 H_2SO_4 + Sc_2O_3 ⟶ 3 H_2O + Sc2(SO4)3
Balance the chemical equation algebraically: H_2SO_4 + Sc_2O_3 ⟶ H_2O + Sc2(SO4)3 Add stoichiometric coefficients, c_i, to the reactants and products: c_1 H_2SO_4 + c_2 Sc_2O_3 ⟶ c_3 H_2O + c_4 Sc2(SO4)3 Set the number of atoms in the reactants equal to the number of atoms in the products for H, O, S and Sc: H: | 2 c_1 = 2 c_3 O: | 4 c_1 + 3 c_2 = c_3 + 12 c_4 S: | c_1 = 3 c_4 Sc: | 2 c_2 = 2 c_4 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_2 = 1 and solve the system of equations for the remaining coefficients: c_1 = 3 c_2 = 1 c_3 = 3 c_4 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 3 H_2SO_4 + Sc_2O_3 ⟶ 3 H_2O + Sc2(SO4)3

Structures

+ ⟶ + Sc2(SO4)3
+ ⟶ + Sc2(SO4)3

Names

sulfuric acid + scandium(III) oxide ⟶ water + Sc2(SO4)3
sulfuric acid + scandium(III) oxide ⟶ water + Sc2(SO4)3

Equilibrium constant

Construct the equilibrium constant, K, expression for: H_2SO_4 + Sc_2O_3 ⟶ H_2O + Sc2(SO4)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 H_2SO_4 + Sc_2O_3 ⟶ 3 H_2O + Sc2(SO4)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 H_2SO_4 | 3 | -3 Sc_2O_3 | 1 | -1 H_2O | 3 | 3 Sc2(SO4)3 | 1 | 1 Assemble the activity expressions accounting for the state of matter and ν_i: chemical species | c_i | ν_i | activity expression H_2SO_4 | 3 | -3 | ([H2SO4])^(-3) Sc_2O_3 | 1 | -1 | ([Sc2O3])^(-1) H_2O | 3 | 3 | ([H2O])^3 Sc2(SO4)3 | 1 | 1 | [Sc2(SO4)3] 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 = ([H2SO4])^(-3) ([Sc2O3])^(-1) ([H2O])^3 [Sc2(SO4)3] = (([H2O])^3 [Sc2(SO4)3])/(([H2SO4])^3 [Sc2O3])
Construct the equilibrium constant, K, expression for: H_2SO_4 + Sc_2O_3 ⟶ H_2O + Sc2(SO4)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 H_2SO_4 + Sc_2O_3 ⟶ 3 H_2O + Sc2(SO4)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 H_2SO_4 | 3 | -3 Sc_2O_3 | 1 | -1 H_2O | 3 | 3 Sc2(SO4)3 | 1 | 1 Assemble the activity expressions accounting for the state of matter and ν_i: chemical species | c_i | ν_i | activity expression H_2SO_4 | 3 | -3 | ([H2SO4])^(-3) Sc_2O_3 | 1 | -1 | ([Sc2O3])^(-1) H_2O | 3 | 3 | ([H2O])^3 Sc2(SO4)3 | 1 | 1 | [Sc2(SO4)3] 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 = ([H2SO4])^(-3) ([Sc2O3])^(-1) ([H2O])^3 [Sc2(SO4)3] = (([H2O])^3 [Sc2(SO4)3])/(([H2SO4])^3 [Sc2O3])

Rate of reaction

Construct the rate of reaction expression for: H_2SO_4 + Sc_2O_3 ⟶ H_2O + Sc2(SO4)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 H_2SO_4 + Sc_2O_3 ⟶ 3 H_2O + Sc2(SO4)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 H_2SO_4 | 3 | -3 Sc_2O_3 | 1 | -1 H_2O | 3 | 3 Sc2(SO4)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 H_2SO_4 | 3 | -3 | -1/3 (Δ[H2SO4])/(Δt) Sc_2O_3 | 1 | -1 | -(Δ[Sc2O3])/(Δt) H_2O | 3 | 3 | 1/3 (Δ[H2O])/(Δt) Sc2(SO4)3 | 1 | 1 | (Δ[Sc2(SO4)3])/(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[H2SO4])/(Δt) = -(Δ[Sc2O3])/(Δt) = 1/3 (Δ[H2O])/(Δt) = (Δ[Sc2(SO4)3])/(Δt) (assuming constant volume and no accumulation of intermediates or side products)
Construct the rate of reaction expression for: H_2SO_4 + Sc_2O_3 ⟶ H_2O + Sc2(SO4)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 H_2SO_4 + Sc_2O_3 ⟶ 3 H_2O + Sc2(SO4)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 H_2SO_4 | 3 | -3 Sc_2O_3 | 1 | -1 H_2O | 3 | 3 Sc2(SO4)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 H_2SO_4 | 3 | -3 | -1/3 (Δ[H2SO4])/(Δt) Sc_2O_3 | 1 | -1 | -(Δ[Sc2O3])/(Δt) H_2O | 3 | 3 | 1/3 (Δ[H2O])/(Δt) Sc2(SO4)3 | 1 | 1 | (Δ[Sc2(SO4)3])/(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[H2SO4])/(Δt) = -(Δ[Sc2O3])/(Δt) = 1/3 (Δ[H2O])/(Δt) = (Δ[Sc2(SO4)3])/(Δt) (assuming constant volume and no accumulation of intermediates or side products)

Chemical names and formulas

| sulfuric acid | scandium(III) oxide | water | Sc2(SO4)3 formula | H_2SO_4 | Sc_2O_3 | H_2O | Sc2(SO4)3 Hill formula | H_2O_4S | O_3Sc_2 | H_2O | O12S3Sc2 name | sulfuric acid | scandium(III) oxide | water |
| sulfuric acid | scandium(III) oxide | water | Sc2(SO4)3 formula | H_2SO_4 | Sc_2O_3 | H_2O | Sc2(SO4)3 Hill formula | H_2O_4S | O_3Sc_2 | H_2O | O12S3Sc2 name | sulfuric acid | scandium(III) oxide | water |

Substance properties

| sulfuric acid | scandium(III) oxide | water | Sc2(SO4)3 molar mass | 98.07 g/mol | 137.91 g/mol | 18.015 g/mol | 378.1 g/mol phase | liquid (at STP) | solid (at STP) | liquid (at STP) | melting point | 10.371 °C | 1000 °C | 0 °C | boiling point | 279.6 °C | | 99.9839 °C | density | 1.8305 g/cm^3 | 8.35 g/cm^3 | 1 g/cm^3 | solubility in water | very soluble | | | surface tension | 0.0735 N/m | | 0.0728 N/m | dynamic viscosity | 0.021 Pa s (at 25 °C) | | 8.9×10^-4 Pa s (at 25 °C) | odor | odorless | | odorless |
| sulfuric acid | scandium(III) oxide | water | Sc2(SO4)3 molar mass | 98.07 g/mol | 137.91 g/mol | 18.015 g/mol | 378.1 g/mol phase | liquid (at STP) | solid (at STP) | liquid (at STP) | melting point | 10.371 °C | 1000 °C | 0 °C | boiling point | 279.6 °C | | 99.9839 °C | density | 1.8305 g/cm^3 | 8.35 g/cm^3 | 1 g/cm^3 | solubility in water | very soluble | | | surface tension | 0.0735 N/m | | 0.0728 N/m | dynamic viscosity | 0.021 Pa s (at 25 °C) | | 8.9×10^-4 Pa s (at 25 °C) | odor | odorless | | odorless |

Units

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