4.
过氧化氢俗名双氧水,可以利用它杀菌消毒\(\rm{.}\)根据下列反应回答问题:
A.\(\rm{Na_{2}O_{2}+2HCl=2NaCl+H_{2}O_{2}}\)
B.\(\rm{Ag_{2}O+H_{2}O_{2}=2Ag+O_{2}↑+H_{2}O}\)
C.\(\rm{2H_{2}O_{2}=2H_{2}O+O_{2}↑}\)
D.\(\rm{3H_{2}O_{2}+Cr_{2}(SO_{4})_{3}+10KOH=2K_{2}CrO_{4}+3K_{2}SO_{4}+8H_{2}O}\)
\(\rm{(1)}\)上述反应中,\(\rm{H_{2}O_{2}}\)仅体现氧化性的反应是\(\rm{(}\)填代号,下同\(\rm{)}\) ______ ,
\(\rm{(2)}\)上述反应说明\(\rm{H_{2}O_{2}}\)、\(\rm{Ag_{2}O}\)、\(\rm{K_{2}CrO_{4}}\)的氧化性由强到弱的顺序是 ______ .
\(\rm{(3)}\)保存过氧化氢试剂瓶上的最适合贴上的一个标签是 ______ \(\rm{(}\)填序号\(\rm{)}\);