氯气是一种有毒气体，可用氢氧化钠溶液来吸收处理。其原理为：Cl2 + 2NaOH = NaCl+ X + H2O，则X的的化学式为请选择ABCD3_.T2z9R(b2y4^1[)i8`9{0e-l.s1U3n,F:?+Y'r
A．HCl1[)i8`9{0e-l.s1U3n,F:?+Y'r
B．NaClO1[)i8`9{0e-l.s1U3n,F:?+Y'r
C．H21[)i8`9{0e-l.s1U3n,F:?+Y'r
D．HClO1[)i8`9{0e-l.s1U3n,F:?+Y'r