A:常温下,将醋酸钠、盐酸两溶液混合后,溶液呈中性,则混合溶液中: c (Na+)>c(Cl-)>c(CH3COOH)
B:相同条件下pH=5的①NH4Cl溶液②CH3COOH溶液③稀盐酸溶液中由水电离的c(H+):①>②>③
C:pH相等的①NH4Cl ②(NH4)2SO4③NH4HSO4溶液中,c(NH4+)大小顺序:①=②>③
D:0.1mol/L醋酸钡溶液中,c (Ba2+)>c(CH3COO-)>c(OH-)> c (H+)
改错。
My sister have long hair and big eyes.
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Sara walked in fear, because she felt that someone was following her.
我国幅员辽阔,东西跨60多个经度,这就造成了( )