Question

When 3.0g of carbon is burnt in 8.00 g of oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 3.00g of carbon is burnt in 50.00 g of oxygen?  Which law of chemical combination will govern your answer?






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Answer 1

C+O

C+O 2

C+O 2

C+O 2 →CO

C+O 2 →CO 2

C+O 2 →CO 2

C+O 2 →CO 2

C+O 2 →CO 2 3g 8g 11g

C+O 2 →CO 2 3g 8g 11gTotal mass of reactants = mass of carbon + mass of oxygen =3+8=11g

C+O 2 →CO 2 3g 8g 11gTotal mass of reactants = mass of carbon + mass of oxygen =3+8=11gTotal mass of reactants = Total mass of products

C+O 2 →CO 2 3g 8g 11gTotal mass of reactants = mass of carbon + mass of oxygen =3+8=11gTotal mass of reactants = Total mass of productsHence, the law of conservation of mass is proved.

C+O 2 →CO 2 3g 8g 11gTotal mass of reactants = mass of carbon + mass of oxygen =3+8=11gTotal mass of reactants = Total mass of productsHence, the law of conservation of mass is proved.Further, it also shows carbon dioxide contains carbon and oxygen in a fixed ratio by mass, which is 3:8.

C+O 2 →CO 2 3g 8g 11gTotal mass of reactants = mass of carbon + mass of oxygen =3+8=11gTotal mass of reactants = Total mass of productsHence, the law of conservation of mass is proved.Further, it also shows carbon dioxide contains carbon and oxygen in a fixed ratio by mass, which is 3:8.Thus it also proves the law of constant proportions. 3 g of carbon must also combine with 8 g of oxygen only.

C+O 2 →CO 2 3g 8g 11gTotal mass of reactants = mass of carbon + mass of oxygen =3+8=11gTotal mass of reactants = Total mass of productsHence, the law of conservation of mass is proved.Further, it also shows carbon dioxide contains carbon and oxygen in a fixed ratio by mass, which is 3:8.Thus it also proves the law of constant proportions. 3 g of carbon must also combine with 8 g of oxygen only.This means that (50−8)=42g of oxygen will remain unreacted.

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Answer 2

Answer:

As per the given condition, when 3.0 g of carbon is burnt in 8.00 g oxygen, 11.00 g of carbon dioxide is produced. Therefore, the law of conservation of mass is proved. Then, it also depicts that the carbon dioxide contains carbon and oxygen in a fixed ratio by mass, which is 3:8.

Explanation:

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