Input interpretation
nitrogen dioxide + red phosphorus ⟶ nitrogen + P2O5
Balanced equation
Balance the chemical equation algebraically: + ⟶ + P2O5 Add stoichiometric coefficients, c_i, to the reactants and products: c_1 + c_2 ⟶ c_3 + c_4 P2O5 Set the number of atoms in the reactants equal to the number of atoms in the products for N, O and P: N: | c_1 = 2 c_3 O: | 2 c_1 = 5 c_4 P: | 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_4 = 1 and solve the system of equations for the remaining coefficients: c_1 = 5/2 c_2 = 2 c_3 = 5/4 c_4 = 1 Multiply by the least common denominator, 4, to eliminate fractional coefficients: c_1 = 10 c_2 = 8 c_3 = 5 c_4 = 4 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 10 + 8 ⟶ 5 + 4 P2O5
Structures
+ ⟶ + P2O5
Names
nitrogen dioxide + red phosphorus ⟶ nitrogen + P2O5
Chemical names and formulas
| nitrogen dioxide | red phosphorus | nitrogen | P2O5 formula | | | | P2O5 Hill formula | NO_2 | P | N_2 | O5P2 name | nitrogen dioxide | red phosphorus | nitrogen | IUPAC name | Nitrogen dioxide | phosphorus | molecular nitrogen |
Substance properties
| nitrogen dioxide | red phosphorus | nitrogen | P2O5 molar mass | 46.005 g/mol | 30.973761998 g/mol | 28.014 g/mol | 141.94 g/mol phase | gas (at STP) | solid (at STP) | gas (at STP) | melting point | -11 °C | 579.2 °C | -210 °C | boiling point | 21 °C | | -195.79 °C | density | 0.00188 g/cm^3 (at 25 °C) | 2.16 g/cm^3 | 0.001251 g/cm^3 (at 0 °C) | solubility in water | reacts | insoluble | insoluble | surface tension | | | 0.0066 N/m | dynamic viscosity | 4.02×10^-4 Pa s (at 25 °C) | 7.6×10^-4 Pa s (at 20.2 °C) | 1.78×10^-5 Pa s (at 25 °C) | odor | | | odorless |
Units
