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【单选题】
溶液中下列电离方程式书写正确的是A.
NaHSO 4 Na ＋ ＋H ＋ ＋SO 4 2-
B.
NaHCO 3 ===Na ＋ ＋H ＋ ＋CO 3 2-
C.
HClO===H ＋ ＋ClO －
D.
H 2 S HS － ＋H ＋ ，HS － H ＋ ＋S 2 －
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