Question

Carbon and oxygen combine in the ratio 3: 8 by mass to form carbon dioxide. How much of oxygen would be required to burn 12 g of carbon? State the law which supports this observation.​

Answer 1

Answer: t is given that,

C + O2 ---> CO2

in carbon dioxide, the ratio of mass of carbon to oxygen is 3 : 8.  

Let x grams be the mass of the oxygen that would be required to react completely with 6 grams of carbon. According to the law of constant proportion,

(12/x) = (3/8)

=> x = 32 g

Therefore, 32g of oxygen is required to completely react with 12 gram of carbon.

Since you now know the reaction for the formation of CO2, work on it yourself and let us know if you face any issues.

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