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Al2O3-Al-AlCl3-NaCl-NaOH-Cu(OH)2 Chuỗi phản ứng

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Al2O3------>Al---------->AlCl3---------->-NaCl------------>NaOH--------->Cu(OH)2

Al2O3+3CO-------->2Al+3CO2(Có t độ)

2Al+6HCl--------->2AlCl3+3H2

AlCl3+3NaOH------->3NaCl+Al(OH)3

2NaCl+2H2O-------->2NaOH+H2+Cl2

2NaOH+CuCl2--------->2NaCl+Cu(OH)2

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Al2O3-Al-AlCl3-NaCl-NaOH-Cu(OH)2 Chuỗi phản ứng

2 câu trả lời

if you don't wear a helmet , you can't ride your bike => Unless

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

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Al2O3-Al-AlCl3-NaCl-NaOH-Cu(OH)2 Chuỗi phản ứng

2 câu trả lời

if you don't wear a helmet , you can't ride your bike => Unless

Choose the best answer.I think you should buy _____ pack of mineral water instead. And you can also buy _____ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______ cookies and soft candies.

Choose the best answer.We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.

Choose the best answer.I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

Đề thi - đề kiểm tra Xem thêm

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.