题目7单选题
在制备硫酸亚铁铵晶体的过程中,下列说法不正确的是( )A. 因保持硫酸适当过量,避免<img src="https://tihai-oss-cloud.itihey.com/img/93e66948839c0e1d88c4c5b80917bcf2.webp">、<img src="https://tihai-oss-cloud.itihey.com/img/60b442a8583b9b4c057b6ba6cef59e18.webp">的水解B. 将铁屑放入<img src="https://tihai-oss-cloud.itihey.com/img/199e3ca0e389142840e5fc06e7f42432.webp"><img src="https://tihai-oss-cloud.itihey.com/img/df81edeb7d408fa082b3551934f23887.webp">溶液中浸泡数分钟是为了除去铁屑表面的油污C. 将<img src="https://tihai-oss-cloud.itihey.com/img/77f8391347a71460f5a09c399afd8edb.webp">和<img src="https://tihai-oss-cloud.itihey.com/img/0e044ace82deefd39ae2aeb8068e0e3b.webp">的混合溶液加热蒸干即可得到硫酸亚铁铵D. 洗涤硫酸亚铁铵晶体时,应用少量酒精洗去晶体表面附着的水分