Which of the following ions will NOT react with hot HCl(aq) or hot NaOH(aq) ?
A. Fe 2+ (aq)
B. NH4 + (aq)
C. SO4 2- (aq)
D. SO3 2- (aq)
chem mc
2012-02-14 2:07 am
回答 (1)
2012-02-14 5:46 am
✔ 最佳答案
A is incorrect. Fe^2+ can react with NaOH to form green Fe(OH)2 precipitate.B is incorrect. NH4^+ can react with hot NaOH to form pungent ammonia gas.
C is correct. SO4^2- is unreactive to both hot HCl and NaOH.
D is incorrect. SO3^2- can react with HCl to form pungent sulphur dioxide gas.
參考: Knowledge is power.
收錄日期: 2021-04-23 18:33:47
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