Input interpretation
oxygen + nitrogen ⟶ nitrous oxide
Balanced equation
Balance the chemical equation algebraically: + ⟶ Add stoichiometric coefficients, c_i, to the reactants and products: c_1 + c_2 ⟶ c_3 Set the number of atoms in the reactants equal to the number of atoms in the products for O and N: O: | 2 c_1 = c_3 N: | 2 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_1 = 1 and solve the system of equations for the remaining coefficients: c_1 = 1 c_2 = 2 c_3 = 2 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | + 2 ⟶ 2
Structures
+ ⟶
Names
oxygen + nitrogen ⟶ nitrous oxide
Reaction thermodynamics
Enthalpy
| oxygen | nitrogen | nitrous oxide molecular enthalpy | 0 kJ/mol | 0 kJ/mol | 81.6 kJ/mol total enthalpy | 0 kJ/mol | 0 kJ/mol | 163.2 kJ/mol | H_initial = 0 kJ/mol | | H_final = 163.2 kJ/mol ΔH_rxn^0 | 163.2 kJ/mol - 0 kJ/mol = 163.2 kJ/mol (endothermic) | |
Gibbs free energy
| oxygen | nitrogen | nitrous oxide molecular free energy | 231.7 kJ/mol | 0 kJ/mol | 104 kJ/mol total free energy | 231.7 kJ/mol | 0 kJ/mol | 208 kJ/mol | G_initial = 231.7 kJ/mol | | G_final = 208 kJ/mol ΔG_rxn^0 | 208 kJ/mol - 231.7 kJ/mol = -23.7 kJ/mol (exergonic) | |
Entropy
| oxygen | nitrogen | nitrous oxide molecular entropy | 205 J/(mol K) | 192 J/(mol K) | 220 J/(mol K) total entropy | 205 J/(mol K) | 384 J/(mol K) | 440 J/(mol K) | S_initial = 589 J/(mol K) | | S_final = 440 J/(mol K) ΔS_rxn^0 | 440 J/(mol K) - 589 J/(mol K) = -149 J/(mol K) (exoentropic) | |
Chemical names and formulas
| oxygen | nitrogen | nitrous oxide Hill formula | O_2 | N_2 | N_2O name | oxygen | nitrogen | nitrous oxide IUPAC name | molecular oxygen | molecular nitrogen | nitrous oxide
Substance properties
| oxygen | nitrogen | nitrous oxide molar mass | 31.998 g/mol | 28.014 g/mol | 44.013 g/mol phase | gas (at STP) | gas (at STP) | gas (at STP) melting point | -218 °C | -210 °C | -91 °C boiling point | -183 °C | -195.79 °C | -88 °C density | 0.001429 g/cm^3 (at 0 °C) | 0.001251 g/cm^3 (at 0 °C) | 0.001799 g/cm^3 (at 25 °C) solubility in water | | insoluble | surface tension | 0.01347 N/m | 0.0066 N/m | 0.00175 N/m dynamic viscosity | 2.055×10^-5 Pa s (at 25 °C) | 1.78×10^-5 Pa s (at 25 °C) | 1.491×10^-5 Pa s (at 25 °C) odor | odorless | odorless |
Units
