1: cho hỗn hợp A gồm KNO3 và Cu(NO3)2. Nhiệt phân hoàn toàn A lấy toàn bộ khí cho vào lượng nước dư thu được 2lít dung dịch B có pH=1 và thấy có 1,68 lít khí chưa bị hấp thụ ( đktc). Tìm khối lượng mỗi muối trong hỗn hợp A 2: nung 3,4gam AgNO3 sau 1 thời gian thấy chất rắn còn 25,56gam. Tìm hiệu suất phản ứng

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