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SO2-Na2so3-Na2SO4-NaOH-Na2CO3 Chuổi phản ứng

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$SO_2+2NaOH\xrightarrow{}Na_2SO_3+H_2O$
$Na_2SO_3+H_2SO_4\xrightarrow{}Na_2SO_4+H_2O+SO_2$
$Na_2SO_4+Ba(OH)_2\xirghtarrow{}2NaOH+BaSO_4$
$2NaOH+CO_2\xrightarrow{}Na_2CO_3+H_2O$

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2 năm trước

SO2+ Na2O (t*)-> Na2SO3

Na2SO3+ H2SO4 -> Na2SO4+ SO2+ H2O

Na2SO4+ Ba(OH)2 -> BaSO4+ 2NaOH

2NaOH+ CO2 -> Na2CO3+ H2O

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SO2-Na2so3-Na2SO4-NaOH-Na2CO3 Chuổi 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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SO2-Na2so3-Na2SO4-NaOH-Na2CO3 Chuổi 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

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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.

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

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