Question

When 3.0 g of carbon is burnt in 8.00 g 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 50.00g of oxygen? which law of chemical combination will govern your answer?​

Answer 1

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.

C + O2 ---> CO2

3 g + 8 g ---> 11 g

Here mass of rectants = mass of products

So law of conservation of mass is used.

Now here , Carbon and oxygen combine in the ratio 3:8.

So when 3 g of Carbon is burnt in 50 g of oxygen,only 8 g of oxygen will react. So same, 11 g of Carbon dioxide will be produced

Here, the law of constant proportions is used to get the answer.