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SnCl2 + HgCl2 = SnCl4 + Hg2Cl2

Input interpretation

SnCl_2 (stannous chloride) + HgCl_2 (mercuric chloride) ⟶ SnCl_4 (stannic chloride) + Hg_2Cl_2 (mercury(I) chloride)
SnCl_2 (stannous chloride) + HgCl_2 (mercuric chloride) ⟶ SnCl_4 (stannic chloride) + Hg_2Cl_2 (mercury(I) chloride)

Balanced equation

Balance the chemical equation algebraically: SnCl_2 + HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2 Add stoichiometric coefficients, c_i, to the reactants and products: c_1 SnCl_2 + c_2 HgCl_2 ⟶ c_3 SnCl_4 + c_4 Hg_2Cl_2 Set the number of atoms in the reactants equal to the number of atoms in the products for Cl, Sn and Hg: Cl: | 2 c_1 + 2 c_2 = 4 c_3 + 2 c_4 Sn: | c_1 = c_3 Hg: | 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_1 = 1 and solve the system of equations for the remaining coefficients: c_1 = 1 c_2 = 2 c_3 = 1 c_4 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | SnCl_2 + 2 HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2
Balance the chemical equation algebraically: SnCl_2 + HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2 Add stoichiometric coefficients, c_i, to the reactants and products: c_1 SnCl_2 + c_2 HgCl_2 ⟶ c_3 SnCl_4 + c_4 Hg_2Cl_2 Set the number of atoms in the reactants equal to the number of atoms in the products for Cl, Sn and Hg: Cl: | 2 c_1 + 2 c_2 = 4 c_3 + 2 c_4 Sn: | c_1 = c_3 Hg: | 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_1 = 1 and solve the system of equations for the remaining coefficients: c_1 = 1 c_2 = 2 c_3 = 1 c_4 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | SnCl_2 + 2 HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2

Structures

+ ⟶ +
+ ⟶ +

Names

stannous chloride + mercuric chloride ⟶ stannic chloride + mercury(I) chloride
stannous chloride + mercuric chloride ⟶ stannic chloride + mercury(I) chloride

Equilibrium constant

Construct the equilibrium constant, K, expression for: SnCl_2 + HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2 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: SnCl_2 + 2 HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2 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 SnCl_2 | 1 | -1 HgCl_2 | 2 | -2 SnCl_4 | 1 | 1 Hg_2Cl_2 | 1 | 1 Assemble the activity expressions accounting for the state of matter and ν_i: chemical species | c_i | ν_i | activity expression SnCl_2 | 1 | -1 | ([SnCl2])^(-1) HgCl_2 | 2 | -2 | ([HgCl2])^(-2) SnCl_4 | 1 | 1 | [SnCl4] Hg_2Cl_2 | 1 | 1 | [Hg2Cl2] 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 = ([SnCl2])^(-1) ([HgCl2])^(-2) [SnCl4] [Hg2Cl2] = ([SnCl4] [Hg2Cl2])/([SnCl2] ([HgCl2])^2)
Construct the equilibrium constant, K, expression for: SnCl_2 + HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2 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: SnCl_2 + 2 HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2 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 SnCl_2 | 1 | -1 HgCl_2 | 2 | -2 SnCl_4 | 1 | 1 Hg_2Cl_2 | 1 | 1 Assemble the activity expressions accounting for the state of matter and ν_i: chemical species | c_i | ν_i | activity expression SnCl_2 | 1 | -1 | ([SnCl2])^(-1) HgCl_2 | 2 | -2 | ([HgCl2])^(-2) SnCl_4 | 1 | 1 | [SnCl4] Hg_2Cl_2 | 1 | 1 | [Hg2Cl2] 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 = ([SnCl2])^(-1) ([HgCl2])^(-2) [SnCl4] [Hg2Cl2] = ([SnCl4] [Hg2Cl2])/([SnCl2] ([HgCl2])^2)

Rate of reaction

Construct the rate of reaction expression for: SnCl_2 + HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2 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: SnCl_2 + 2 HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2 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 SnCl_2 | 1 | -1 HgCl_2 | 2 | -2 SnCl_4 | 1 | 1 Hg_2Cl_2 | 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 SnCl_2 | 1 | -1 | -(Δ[SnCl2])/(Δt) HgCl_2 | 2 | -2 | -1/2 (Δ[HgCl2])/(Δt) SnCl_4 | 1 | 1 | (Δ[SnCl4])/(Δt) Hg_2Cl_2 | 1 | 1 | (Δ[Hg2Cl2])/(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 = -(Δ[SnCl2])/(Δt) = -1/2 (Δ[HgCl2])/(Δt) = (Δ[SnCl4])/(Δt) = (Δ[Hg2Cl2])/(Δt) (assuming constant volume and no accumulation of intermediates or side products)
Construct the rate of reaction expression for: SnCl_2 + HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2 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: SnCl_2 + 2 HgCl_2 ⟶ SnCl_4 + Hg_2Cl_2 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 SnCl_2 | 1 | -1 HgCl_2 | 2 | -2 SnCl_4 | 1 | 1 Hg_2Cl_2 | 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 SnCl_2 | 1 | -1 | -(Δ[SnCl2])/(Δt) HgCl_2 | 2 | -2 | -1/2 (Δ[HgCl2])/(Δt) SnCl_4 | 1 | 1 | (Δ[SnCl4])/(Δt) Hg_2Cl_2 | 1 | 1 | (Δ[Hg2Cl2])/(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 = -(Δ[SnCl2])/(Δt) = -1/2 (Δ[HgCl2])/(Δt) = (Δ[SnCl4])/(Δt) = (Δ[Hg2Cl2])/(Δt) (assuming constant volume and no accumulation of intermediates or side products)

Chemical names and formulas

| stannous chloride | mercuric chloride | stannic chloride | mercury(I) chloride formula | SnCl_2 | HgCl_2 | SnCl_4 | Hg_2Cl_2 Hill formula | Cl_2Sn | Cl_2Hg | Cl_4Sn | Cl_2Hg_2 name | stannous chloride | mercuric chloride | stannic chloride | mercury(I) chloride IUPAC name | dichlorotin | dichloromercury | tetrachlorostannane | chloromercury
| stannous chloride | mercuric chloride | stannic chloride | mercury(I) chloride formula | SnCl_2 | HgCl_2 | SnCl_4 | Hg_2Cl_2 Hill formula | Cl_2Sn | Cl_2Hg | Cl_4Sn | Cl_2Hg_2 name | stannous chloride | mercuric chloride | stannic chloride | mercury(I) chloride IUPAC name | dichlorotin | dichloromercury | tetrachlorostannane | chloromercury

Substance properties

| stannous chloride | mercuric chloride | stannic chloride | mercury(I) chloride molar mass | 189.6 g/mol | 271.49 g/mol | 260.5 g/mol | 472.08 g/mol phase | solid (at STP) | solid (at STP) | liquid (at STP) | solid (at STP) melting point | 246 °C | 277 °C | -33 °C | 525 °C boiling point | 652 °C | 302 °C | 114 °C | 383 °C density | 3.354 g/cm^3 | 5.44 g/cm^3 | 2.226 g/cm^3 | 7.16 g/cm^3 solubility in water | | | soluble | insoluble dynamic viscosity | 7 Pa s (at 25 °C) | | 5.8×10^-4 Pa s (at 60 °C) | odor | odorless | odorless | |
| stannous chloride | mercuric chloride | stannic chloride | mercury(I) chloride molar mass | 189.6 g/mol | 271.49 g/mol | 260.5 g/mol | 472.08 g/mol phase | solid (at STP) | solid (at STP) | liquid (at STP) | solid (at STP) melting point | 246 °C | 277 °C | -33 °C | 525 °C boiling point | 652 °C | 302 °C | 114 °C | 383 °C density | 3.354 g/cm^3 | 5.44 g/cm^3 | 2.226 g/cm^3 | 7.16 g/cm^3 solubility in water | | | soluble | insoluble dynamic viscosity | 7 Pa s (at 25 °C) | | 5.8×10^-4 Pa s (at 60 °C) | odor | odorless | odorless | |

Units

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