WC + 4HCl + 10HNO3 H2[WO2Cl4] + CO2 + 10NO2 + 5H2O
Tungsten monocarbide react with hydrogen chloride and nitric acid to produce hydrogen tetrachloridooxotungstate(VI), carbon dioxide, nitrogen dioxide and water. Hydrogen chloride and nitric acid - concentrated solutions. The reaction takes place in a boiling solution.