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kimsa01255
2 năm trước
Cho 35 gam hh Mg,Al,Zn phản ứng với dd HCl dư . Khí bay ra hấp thụ hoàn toàn bằng dung dịch chứa 0,0225 mol Ba(OH)2. Sau phản ứng Ba(OH)2 dư tách ra và có thể phản ứng hết với H2SO4 tạo ra 1,7475 gam kết tủa . Tính khối lượng mỗi chất trong hh ban đâu
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