【多选题】可用于解救氰化物中毒的特殊解毒 剂是 ( )
【简答题】工业用盐亚硝酸钠是一种有咸味、易溶于水的白色固体,有毒.水溶液呈碱性,亚硝酸钠能将Fe 2+ 转化为Fe 3+ .请回答以下问题: (1)亚硝酸钠(NaNO 2 )所属类别是______; (2)下列方法中,能用来区别NaNO 2 与NaCl固体的是______; A.观察颜色B.品尝味道C.用水溶解D.测试两溶液pH值 (3)人体正常的血红蛋白中含Fe 2+ .若误食亚硝酸钠,就会导致血红蛋白中...
【简答题】Choose the correct word to complete each sentence. 1. She’s such a ________ (good/well) tennis player. 2. He passed his test ________ (easy/ easily). 3. She is a very ________ (slow/slowly) worker. 4....
【简答题】I . Fill in the missing words according to the sentences. 1. Excuse me, where is the l _________? I need to borrow some books. 2. I am late for work today because of the t_____ jam. 3. Buses are cheap...
【简答题】随着科技的进步,食品防腐技术在不断发展.亚硝酸钠(NaNO 2 )是一种常用的防腐剂. 【查阅资料】:亚硝酸钠是一种淡黄色或白色晶体,有咸味,易溶于水,其水溶液呈碱性,在320℃时能分解产生有刺激性气味的气体.有毒,能将人体血红蛋白中的Fe 2+ 转化为Fe 3+ 失去携氧能力. 结合资料回答问题: (1)测定亚硝酸钠溶液的酸碱度常用______. (2)设计实验探究:亚硝酸钠溶液能将Fe 2+ ...
【单选题】下列药物中,可用于亚硝酸盐中毒解救的是( )