A.
用浓盐酸酸化的KMnO 4 溶液与H 2 O 2 反应,证明H 2 O 2 具有还原性:2MnO 4 - +6H + +5H 2 O 2 =2Mn 2+ +5O 2 ↑ +8H 2 O
B.
漂白粉溶液在空气中失效:ClO - +CO 2 +H 2 O=HClO+HCO 3 -
C.
Fe(OH) 3 溶于氢碘酸:Fe(OH) 3 +3H + =Fe 3+ +3H 2 O
D.
向溴化亚铁溶液中通入等物质的量的氯气:2Fe 2+ +2Br - +2Cl 2 =2Fe 3+ +Br 2 +4Cl -