KOH + Zn + KClO3 = H2O + KCl + K2ZnO2

potassium hydroxide + zinc + potassium chlorate ⟶ water + potassium chloride + K2ZnO2

Balance the chemical equation algebraically: + + ⟶ + + K2ZnO2 Add stoichiometric coefficients, c_i, to the reactants and products: c_1 + c_2 + c_3 ⟶ c_4 + c_5 + c_6 K2ZnO2 Set the number of atoms in the reactants equal to the number of atoms in the products for H, K, O, Zn and Cl: H: | c_1 = 2 c_4 K: | c_1 + c_3 = c_5 + 2 c_6 O: | c_1 + 3 c_3 = c_4 + 2 c_6 Zn: | c_2 = c_6 Cl: | c_3 = c_5 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 = 6 c_2 = 3 c_3 = 1 c_4 = 3 c_5 = 1 c_6 = 3 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 6 + 3 + ⟶ 3 + + 3 K2ZnO2

+ + ⟶ + + K2ZnO2

potassium hydroxide + zinc + potassium chlorate ⟶ water + potassium chloride + K2ZnO2

| potassium hydroxide | zinc | potassium chlorate | water | potassium chloride | K2ZnO2 formula | | | | | | K2ZnO2 Hill formula | HKO | Zn | ClKO_3 | H_2O | ClK | K2O2Zn name | potassium hydroxide | zinc | potassium chlorate | water | potassium chloride |

| potassium hydroxide | zinc | potassium chlorate | water | potassium chloride | K2ZnO2 molar mass | 56.105 g/mol | 65.38 g/mol | 122.5 g/mol | 18.015 g/mol | 74.55 g/mol | 175.6 g/mol phase | solid (at STP) | solid (at STP) | solid (at STP) | liquid (at STP) | solid (at STP) | melting point | 406 °C | 420 °C | 356 °C | 0 °C | 770 °C | boiling point | 1327 °C | 907 °C | | 99.9839 °C | 1420 °C | density | 2.044 g/cm^3 | 7.14 g/cm^3 | 2.34 g/cm^3 | 1 g/cm^3 | 1.98 g/cm^3 | solubility in water | soluble | insoluble | soluble | | soluble | surface tension | | | | 0.0728 N/m | | dynamic viscosity | 0.001 Pa s (at 550 °C) | | | 8.9×10^-4 Pa s (at 25 °C) | | odor | | odorless | | odorless | odorless |