Input interpretation
chlorine + potassium ⟶ potassium chloride
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 Cl and K: Cl: | 2 c_1 = c_3 K: | c_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
chlorine + potassium ⟶ potassium chloride
Reaction thermodynamics
Entropy
| chlorine | potassium | potassium chloride molecular entropy | 223 J/(mol K) | 64 J/(mol K) | 83 J/(mol K) total entropy | 223 J/(mol K) | 128 J/(mol K) | 166 J/(mol K) | S_initial = 351 J/(mol K) | | S_final = 166 J/(mol K) ΔS_rxn^0 | 166 J/(mol K) - 351 J/(mol K) = -185 J/(mol K) (exoentropic) | |
Chemical names and formulas
| chlorine | potassium | potassium chloride Hill formula | Cl_2 | K | ClK name | chlorine | potassium | potassium chloride IUPAC name | molecular chlorine | potassium | potassium chloride
Substance properties
| chlorine | potassium | potassium chloride molar mass | 70.9 g/mol | 39.0983 g/mol | 74.55 g/mol phase | gas (at STP) | solid (at STP) | solid (at STP) melting point | -101 °C | 64 °C | 770 °C boiling point | -34 °C | 760 °C | 1420 °C density | 0.003214 g/cm^3 (at 0 °C) | 0.86 g/cm^3 | 1.98 g/cm^3 solubility in water | | reacts | soluble odor | | | odorless
Units
