Question

6 g of carbon reacts completely with 12g of oxygen producing a mixture of co and co2. the mass percent of co in the gaseous mixture will be about?

Answer 1

Explanation:

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11th

Chemistry

Some Basic Concepts of Chemistry

Stoichiometry and Stoichiometric Calculations

By the reaction of carbon a...

CHEMISTRY

By the reaction of carbon and oxygen, a mixture of CO and CO

2

is obtained. The mass ratio of the mixture obtained when 20 g of O

2

reacts completely with 12 g of carbon is:

December 20, 2019avatar

Yuraj Janu

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ANSWER

Given:

Moles of C =

12

12

=1

Moles of O

2

=

32

20

=0.625

Reaction:

Let the moles of oxygen which react with C to form CO

2

be x

2C + O

2

→ 2CO

1−x (1−x)/2 1−x

C+O

2

→CO

2

x x x

We have, (1−x)/2+x=0.625

Hence, x=0.25

So, moles of carbon dioxide is equal to 0.25 and moles of carbon monoxide is equal to 0.75 .

So, mass of CO produced is 21 g and mass of CO

2

produced is 11 g.