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H2SO4 + KI + H5IO6 = H2O + K2SO4 + I2

Input interpretation

H_2SO_4 sulfuric acid + KI potassium iodide + H_5IO_6 periodic acid ⟶ H_2O water + K_2SO_4 potassium sulfate + I_2 iodine
H_2SO_4 sulfuric acid + KI potassium iodide + H_5IO_6 periodic acid ⟶ H_2O water + K_2SO_4 potassium sulfate + I_2 iodine

Balanced equation

Balance the chemical equation algebraically: H_2SO_4 + KI + H_5IO_6 ⟶ H_2O + K_2SO_4 + I_2 Add stoichiometric coefficients, c_i, to the reactants and products: c_1 H_2SO_4 + c_2 KI + c_3 H_5IO_6 ⟶ c_4 H_2O + c_5 K_2SO_4 + c_6 I_2 Set the number of atoms in the reactants equal to the number of atoms in the products for H, O, S, I and K: H: | 2 c_1 + 5 c_3 = 2 c_4 O: | 4 c_1 + 6 c_3 = c_4 + 4 c_5 S: | c_1 = c_5 I: | c_2 + c_3 = 2 c_6 K: | c_2 = 2 c_5 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 = 7/2 c_2 = 7 c_3 = 1 c_4 = 6 c_5 = 7/2 c_6 = 4 Multiply by the least common denominator, 2, to eliminate fractional coefficients: c_1 = 7 c_2 = 14 c_3 = 2 c_4 = 12 c_5 = 7 c_6 = 8 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 7 H_2SO_4 + 14 KI + 2 H_5IO_6 ⟶ 12 H_2O + 7 K_2SO_4 + 8 I_2
Balance the chemical equation algebraically: H_2SO_4 + KI + H_5IO_6 ⟶ H_2O + K_2SO_4 + I_2 Add stoichiometric coefficients, c_i, to the reactants and products: c_1 H_2SO_4 + c_2 KI + c_3 H_5IO_6 ⟶ c_4 H_2O + c_5 K_2SO_4 + c_6 I_2 Set the number of atoms in the reactants equal to the number of atoms in the products for H, O, S, I and K: H: | 2 c_1 + 5 c_3 = 2 c_4 O: | 4 c_1 + 6 c_3 = c_4 + 4 c_5 S: | c_1 = c_5 I: | c_2 + c_3 = 2 c_6 K: | c_2 = 2 c_5 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 = 7/2 c_2 = 7 c_3 = 1 c_4 = 6 c_5 = 7/2 c_6 = 4 Multiply by the least common denominator, 2, to eliminate fractional coefficients: c_1 = 7 c_2 = 14 c_3 = 2 c_4 = 12 c_5 = 7 c_6 = 8 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 7 H_2SO_4 + 14 KI + 2 H_5IO_6 ⟶ 12 H_2O + 7 K_2SO_4 + 8 I_2

Structures

+ + ⟶ + +
+ + ⟶ + +

Names

sulfuric acid + potassium iodide + periodic acid ⟶ water + potassium sulfate + iodine
sulfuric acid + potassium iodide + periodic acid ⟶ water + potassium sulfate + iodine

Equilibrium constant

Construct the equilibrium constant, K, expression for: H_2SO_4 + KI + H_5IO_6 ⟶ H_2O + K_2SO_4 + I_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: 7 H_2SO_4 + 14 KI + 2 H_5IO_6 ⟶ 12 H_2O + 7 K_2SO_4 + 8 I_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 H_2SO_4 | 7 | -7 KI | 14 | -14 H_5IO_6 | 2 | -2 H_2O | 12 | 12 K_2SO_4 | 7 | 7 I_2 | 8 | 8 Assemble the activity expressions accounting for the state of matter and ν_i: chemical species | c_i | ν_i | activity expression H_2SO_4 | 7 | -7 | ([H2SO4])^(-7) KI | 14 | -14 | ([KI])^(-14) H_5IO_6 | 2 | -2 | ([H5IO6])^(-2) H_2O | 12 | 12 | ([H2O])^12 K_2SO_4 | 7 | 7 | ([K2SO4])^7 I_2 | 8 | 8 | ([I2])^8 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])^(-7) ([KI])^(-14) ([H5IO6])^(-2) ([H2O])^12 ([K2SO4])^7 ([I2])^8 = (([H2O])^12 ([K2SO4])^7 ([I2])^8)/(([H2SO4])^7 ([KI])^14 ([H5IO6])^2)
Construct the equilibrium constant, K, expression for: H_2SO_4 + KI + H_5IO_6 ⟶ H_2O + K_2SO_4 + I_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: 7 H_2SO_4 + 14 KI + 2 H_5IO_6 ⟶ 12 H_2O + 7 K_2SO_4 + 8 I_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 H_2SO_4 | 7 | -7 KI | 14 | -14 H_5IO_6 | 2 | -2 H_2O | 12 | 12 K_2SO_4 | 7 | 7 I_2 | 8 | 8 Assemble the activity expressions accounting for the state of matter and ν_i: chemical species | c_i | ν_i | activity expression H_2SO_4 | 7 | -7 | ([H2SO4])^(-7) KI | 14 | -14 | ([KI])^(-14) H_5IO_6 | 2 | -2 | ([H5IO6])^(-2) H_2O | 12 | 12 | ([H2O])^12 K_2SO_4 | 7 | 7 | ([K2SO4])^7 I_2 | 8 | 8 | ([I2])^8 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])^(-7) ([KI])^(-14) ([H5IO6])^(-2) ([H2O])^12 ([K2SO4])^7 ([I2])^8 = (([H2O])^12 ([K2SO4])^7 ([I2])^8)/(([H2SO4])^7 ([KI])^14 ([H5IO6])^2)

Rate of reaction

Construct the rate of reaction expression for: H_2SO_4 + KI + H_5IO_6 ⟶ H_2O + K_2SO_4 + I_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: 7 H_2SO_4 + 14 KI + 2 H_5IO_6 ⟶ 12 H_2O + 7 K_2SO_4 + 8 I_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 H_2SO_4 | 7 | -7 KI | 14 | -14 H_5IO_6 | 2 | -2 H_2O | 12 | 12 K_2SO_4 | 7 | 7 I_2 | 8 | 8 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 | 7 | -7 | -1/7 (Δ[H2SO4])/(Δt) KI | 14 | -14 | -1/14 (Δ[KI])/(Δt) H_5IO_6 | 2 | -2 | -1/2 (Δ[H5IO6])/(Δt) H_2O | 12 | 12 | 1/12 (Δ[H2O])/(Δt) K_2SO_4 | 7 | 7 | 1/7 (Δ[K2SO4])/(Δt) I_2 | 8 | 8 | 1/8 (Δ[I2])/(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 = -1/7 (Δ[H2SO4])/(Δt) = -1/14 (Δ[KI])/(Δt) = -1/2 (Δ[H5IO6])/(Δt) = 1/12 (Δ[H2O])/(Δt) = 1/7 (Δ[K2SO4])/(Δt) = 1/8 (Δ[I2])/(Δt) (assuming constant volume and no accumulation of intermediates or side products)
Construct the rate of reaction expression for: H_2SO_4 + KI + H_5IO_6 ⟶ H_2O + K_2SO_4 + I_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: 7 H_2SO_4 + 14 KI + 2 H_5IO_6 ⟶ 12 H_2O + 7 K_2SO_4 + 8 I_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 H_2SO_4 | 7 | -7 KI | 14 | -14 H_5IO_6 | 2 | -2 H_2O | 12 | 12 K_2SO_4 | 7 | 7 I_2 | 8 | 8 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 | 7 | -7 | -1/7 (Δ[H2SO4])/(Δt) KI | 14 | -14 | -1/14 (Δ[KI])/(Δt) H_5IO_6 | 2 | -2 | -1/2 (Δ[H5IO6])/(Δt) H_2O | 12 | 12 | 1/12 (Δ[H2O])/(Δt) K_2SO_4 | 7 | 7 | 1/7 (Δ[K2SO4])/(Δt) I_2 | 8 | 8 | 1/8 (Δ[I2])/(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 = -1/7 (Δ[H2SO4])/(Δt) = -1/14 (Δ[KI])/(Δt) = -1/2 (Δ[H5IO6])/(Δt) = 1/12 (Δ[H2O])/(Δt) = 1/7 (Δ[K2SO4])/(Δt) = 1/8 (Δ[I2])/(Δt) (assuming constant volume and no accumulation of intermediates or side products)

Chemical names and formulas

| sulfuric acid | potassium iodide | periodic acid | water | potassium sulfate | iodine formula | H_2SO_4 | KI | H_5IO_6 | H_2O | K_2SO_4 | I_2 Hill formula | H_2O_4S | IK | H_5IO_6 | H_2O | K_2O_4S | I_2 name | sulfuric acid | potassium iodide | periodic acid | water | potassium sulfate | iodine IUPAC name | sulfuric acid | potassium iodide | | water | dipotassium sulfate | molecular iodine
| sulfuric acid | potassium iodide | periodic acid | water | potassium sulfate | iodine formula | H_2SO_4 | KI | H_5IO_6 | H_2O | K_2SO_4 | I_2 Hill formula | H_2O_4S | IK | H_5IO_6 | H_2O | K_2O_4S | I_2 name | sulfuric acid | potassium iodide | periodic acid | water | potassium sulfate | iodine IUPAC name | sulfuric acid | potassium iodide | | water | dipotassium sulfate | molecular iodine

Substance properties

| sulfuric acid | potassium iodide | periodic acid | water | potassium sulfate | iodine molar mass | 98.07 g/mol | 166.0028 g/mol | 227.94 g/mol | 18.015 g/mol | 174.25 g/mol | 253.80894 g/mol phase | liquid (at STP) | solid (at STP) | solid (at STP) | liquid (at STP) | | solid (at STP) melting point | 10.371 °C | 681 °C | 122 °C | 0 °C | | 113 °C boiling point | 279.6 °C | 1330 °C | | 99.9839 °C | | 184 °C density | 1.8305 g/cm^3 | 3.123 g/cm^3 | 1.3875 g/cm^3 | 1 g/cm^3 | | 4.94 g/cm^3 solubility in water | very soluble | | soluble | | soluble | surface tension | 0.0735 N/m | | | 0.0728 N/m | | dynamic viscosity | 0.021 Pa s (at 25 °C) | 0.0010227 Pa s (at 732.9 °C) | | 8.9×10^-4 Pa s (at 25 °C) | | 0.00227 Pa s (at 116 °C) odor | odorless | | odorless | odorless | |
| sulfuric acid | potassium iodide | periodic acid | water | potassium sulfate | iodine molar mass | 98.07 g/mol | 166.0028 g/mol | 227.94 g/mol | 18.015 g/mol | 174.25 g/mol | 253.80894 g/mol phase | liquid (at STP) | solid (at STP) | solid (at STP) | liquid (at STP) | | solid (at STP) melting point | 10.371 °C | 681 °C | 122 °C | 0 °C | | 113 °C boiling point | 279.6 °C | 1330 °C | | 99.9839 °C | | 184 °C density | 1.8305 g/cm^3 | 3.123 g/cm^3 | 1.3875 g/cm^3 | 1 g/cm^3 | | 4.94 g/cm^3 solubility in water | very soluble | | soluble | | soluble | surface tension | 0.0735 N/m | | | 0.0728 N/m | | dynamic viscosity | 0.021 Pa s (at 25 °C) | 0.0010227 Pa s (at 732.9 °C) | | 8.9×10^-4 Pa s (at 25 °C) | | 0.00227 Pa s (at 116 °C) odor | odorless | | odorless | odorless | |

Units

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