Input interpretation
potassium hydroxide + potassium dichromate ⟶ water + potassium chromate
Balanced equation
Balance the chemical equation algebraically: + ⟶ + Add stoichiometric coefficients, c_i, to the reactants and products: c_1 + c_2 ⟶ c_3 + c_4 Set the number of atoms in the reactants equal to the number of atoms in the products for H, K, O and Cr: H: | c_1 = 2 c_3 K: | c_1 + 2 c_2 = 2 c_4 O: | c_1 + 7 c_2 = c_3 + 4 c_4 Cr: | 2 c_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_2 = 1 and solve the system of equations for the remaining coefficients: c_1 = 2 c_2 = 1 c_3 = 1 c_4 = 2 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 2 + ⟶ + 2
Structures
+ ⟶ +
Names
potassium hydroxide + potassium dichromate ⟶ water + potassium chromate
Chemical names and formulas
| potassium hydroxide | potassium dichromate | water | potassium chromate Hill formula | HKO | Cr_2K_2O_7 | H_2O | CrK_2O_4 name | potassium hydroxide | potassium dichromate | water | potassium chromate IUPAC name | potassium hydroxide | dipotassium oxido-(oxido-dioxochromio)oxy-dioxochromium | water | dipotassium dioxido-dioxochromium
Substance properties
| potassium hydroxide | potassium dichromate | water | potassium chromate molar mass | 56.105 g/mol | 294.18 g/mol | 18.015 g/mol | 194.19 g/mol phase | solid (at STP) | solid (at STP) | liquid (at STP) | solid (at STP) melting point | 406 °C | 398 °C | 0 °C | 971 °C boiling point | 1327 °C | | 99.9839 °C | density | 2.044 g/cm^3 | 2.67 g/cm^3 | 1 g/cm^3 | 2.73 g/cm^3 solubility in water | 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
Units
