Bài 8: Hòa tan 1,12 gam sắt vào 100 ml dung dịch axit sunfuric nồng độ 1M. a. Nếu nhúng giấu quì tím vào dd sau phản ứng thí quì tím có đổi màu không ? Giải thích. b. Tính thể tích khí thu được ở đktc . c. Tính khối lượng muối thu được sau phản ứng. d. Tính nồng độ mol của dung dịch muối thu được sau phản ứng. Biết thể tích dung dịch thay đổi không đáng kể.

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