Hỗn hợp A gồm Zn và Fe được chia thành hai phần bằng nhau. - Phần 1: cho tác dụng với clo thì cần 7,84 lít clo (đo ở điều kiện tiêu chuẩn) và thu được hỗn hợp B. - Phần 2: phản ứng vừa đủ với 600 ml dung dịch HCl 1M. a. Tính khối lượng mỗi kim loại trong hỗn hợp A. b. Hoà tan hoàn toàn B trong nước rồi cho tác dụng với dung dịch NaOH 1M. Tính thể tích dung dịch NaOH dùng vừa đủ sao cho lượng kết tủa thu được là lớn nhất, nhỏ nhất. Biết sau phản ứng, dung dịch không chứa muối sắt. (mọi người giúp em với ạ T_T em đang cần gấp lắm, đừng giải theo kiểu điện tích hay bảo toàn electron nhé mng ) * làm câu b thôi cũng được nhé mọi người

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