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