Input interpretation
NaOH (sodium hydroxide) + AgNO_3 (silver nitrate) ⟶ H_2O (water) + NaNO_3 (sodium nitrate) + Ag_2O (silver(I) oxide)
Balanced equation
Balance the chemical equation algebraically: NaOH + AgNO_3 ⟶ H_2O + NaNO_3 + Ag_2O Add stoichiometric coefficients, c_i, to the reactants and products: c_1 NaOH + c_2 AgNO_3 ⟶ c_3 H_2O + c_4 NaNO_3 + c_5 Ag_2O Set the number of atoms in the reactants equal to the number of atoms in the products for H, Na, O, Ag and N: H: | c_1 = 2 c_3 Na: | c_1 = c_4 O: | c_1 + 3 c_2 = c_3 + 3 c_4 + c_5 Ag: | c_2 = 2 c_5 N: | c_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_3 = 1 and solve the system of equations for the remaining coefficients: c_1 = 2 c_2 = 2 c_3 = 1 c_4 = 2 c_5 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 2 NaOH + 2 AgNO_3 ⟶ H_2O + 2 NaNO_3 + Ag_2O
Structures
+ ⟶ + +
Names
sodium hydroxide + silver nitrate ⟶ water + sodium nitrate + silver(I) oxide
Equilibrium constant
Construct the equilibrium constant, K, expression for: NaOH + AgNO_3 ⟶ H_2O + NaNO_3 + Ag_2O 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: 2 NaOH + 2 AgNO_3 ⟶ H_2O + 2 NaNO_3 + Ag_2O 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 NaOH | 2 | -2 AgNO_3 | 2 | -2 H_2O | 1 | 1 NaNO_3 | 2 | 2 Ag_2O | 1 | 1 Assemble the activity expressions accounting for the state of matter and ν_i: chemical species | c_i | ν_i | activity expression NaOH | 2 | -2 | ([NaOH])^(-2) AgNO_3 | 2 | -2 | ([AgNO3])^(-2) H_2O | 1 | 1 | [H2O] NaNO_3 | 2 | 2 | ([NaNO3])^2 Ag_2O | 1 | 1 | [Ag2O] 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 = ([NaOH])^(-2) ([AgNO3])^(-2) [H2O] ([NaNO3])^2 [Ag2O] = ([H2O] ([NaNO3])^2 [Ag2O])/(([NaOH])^2 ([AgNO3])^2)
Rate of reaction
Construct the rate of reaction expression for: NaOH + AgNO_3 ⟶ H_2O + NaNO_3 + Ag_2O 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: 2 NaOH + 2 AgNO_3 ⟶ H_2O + 2 NaNO_3 + Ag_2O 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 NaOH | 2 | -2 AgNO_3 | 2 | -2 H_2O | 1 | 1 NaNO_3 | 2 | 2 Ag_2O | 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 NaOH | 2 | -2 | -1/2 (Δ[NaOH])/(Δt) AgNO_3 | 2 | -2 | -1/2 (Δ[AgNO3])/(Δt) H_2O | 1 | 1 | (Δ[H2O])/(Δt) NaNO_3 | 2 | 2 | 1/2 (Δ[NaNO3])/(Δt) Ag_2O | 1 | 1 | (Δ[Ag2O])/(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 = -1/2 (Δ[NaOH])/(Δt) = -1/2 (Δ[AgNO3])/(Δt) = (Δ[H2O])/(Δt) = 1/2 (Δ[NaNO3])/(Δt) = (Δ[Ag2O])/(Δt) (assuming constant volume and no accumulation of intermediates or side products)
Chemical names and formulas
| sodium hydroxide | silver nitrate | water | sodium nitrate | silver(I) oxide formula | NaOH | AgNO_3 | H_2O | NaNO_3 | Ag_2O Hill formula | HNaO | AgNO_3 | H_2O | NNaO_3 | Ag_2O_1 name | sodium hydroxide | silver nitrate | water | sodium nitrate | silver(I) oxide
Substance properties
| sodium hydroxide | silver nitrate | water | sodium nitrate | silver(I) oxide molar mass | 39.997 g/mol | 169.87 g/mol | 18.015 g/mol | 84.994 g/mol | 231.7 g/mol phase | solid (at STP) | solid (at STP) | liquid (at STP) | solid (at STP) | melting point | 323 °C | 212 °C | 0 °C | 306 °C | boiling point | 1390 °C | | 99.9839 °C | | density | 2.13 g/cm^3 | | 1 g/cm^3 | 2.26 g/cm^3 | solubility in water | soluble | soluble | | soluble | surface tension | 0.07435 N/m | | 0.0728 N/m | | dynamic viscosity | 0.004 Pa s (at 350 °C) | | 8.9×10^-4 Pa s (at 25 °C) | 0.003 Pa s (at 250 °C) | odor | | odorless | odorless | |
Units