Fe3O4+..... -> fe +... Fe+ H2so4 loãng ->…

2 câu trả lời

Đáp án:Fe3O4+4H2->3Fe+4H2O

            Fe+H2SO4 loãng->FeSO4+H2

Giải thích các bước giải:

            Để khử một oxit kim loại ta dùng CO hoặc H2

            Fe tác dụng với axit thì Fe có hóa trị II 

Fe3O4 + 4H2 → 3Fe + 4H2O

Fe + H2SO4 Loãng → FeSO4 + H2↑
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Combine the two sentences into one. Using where, when. …………………………………………………………………………………… 2. I’ll never forget the day. I met you on that day. …………………………………………………………………………………… 3. The city was beautiful. We spent our vacation in that city. …………………………………………………………………………………… 4. Monday is the day. We will come on that day. …………………………………………………………………………………… 5. That is the restaurant. I will meet you at that restaurant. …………………………………………………………………………………… 6. 7:05 is the time. My plane arrives at that time. …………………………………………………………………………………… 7. The town is small. I grew up in that town. …………………………………………………………………………………… 8. That is the drawer. I keep my jewelry in that drawer. …………………………………………………………………………………… 9. 1960 is the year. The revolution took place in that year. …………………………………………………………………………………… 10. July is the month. The weather is usually hot in that month. ……………………………………………………………………………………

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