问题详情

试样要制备成试液，一般应按下列哪种顺序选用溶剂来溶样？( )
A．H₂O→HCl→HNO₃→3HCl+1HNO₃ B．3HCl+1HNO₃→HCl→HNO₃→H₂O
C．HNO₃→HCl→H₂O→3HCl+1HNO₃ D．HCl→HNO₃→H₂O→3HCl+1HNO₃