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phuongthaobuna
2 năm trước
Hòa tan 8,1 gam kim loại Al trong dd H2SO4 0,05M loãng,sau phản ứng thu được dd A và giải phóng H2.Đem toàn bộ lượng H2 sinh ra ở trên đốt cháy trong không khí thì còn 5,6 lít không khí. a)Tính hiệu suất của phản ứng. b)Tính CM của dd A
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