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2 năm trước
Trộn CuO với một oxit kim loại M (hoá trị II) theo tỉ lệ số mol là 1:2 được dd A. Cho 1 luồng khí CO nóng (dư) đi qua 1,2 g hh A đến phản ứng hoàn toàn thu được chất rắn B. Để hoà tan hết chất rắn B cần 50ml dd HNO3 1M thu được dd C chỉ chứa muối của 2 kim loại và V lít khí NO duy nhất (đktc). Xác định M và tính V. Giúp mình với hứa vote 5 sao !!
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