—-Cho kẽm hòa tan vào 200g dd H,SO4 4,9% al Tính khối lượng axit tham gia phản ứng ? b/ Tính số mol muối tạo thành ? c/ Lấy lượng muối ăn bằng với số mol muối tạo thành ở câu b pha vào nước thu được 6 lít dd muối ăn. Hãy tính nồng độ mol/l của dd muối ăn đó ? - Hướng dẫn: Tính khối lượng H,SO, 4,9% (dựa vào công thức). + Viết PTPƯ xảy ra. + Dựa vào PTPỮ tính câu b. + Dựa vào công thức tính n Axít. - Dựa vào công thức Cm tính được (c)

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