3AS 2 S 3 +28HNO 3 + 4 H 2 O6 H 3 ASO 4 + 9 H 2 SO 4 +28NO

11/ 3As 2 S 3 +28HNO 3 + 4 H 2 O6 H 3 AsO 4 + 9 H 2 SO 4 +28NO