Lessons

Eamcet Chemistry
1st Year : Unit 1.4 (Basics & Concepts) - Stoichiometric Calculations

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Q.

One litre of a mixture of CO and CO2 is passed over red hot coke when the volume increased to 1.6 L under the same conditions of temperature and pressure. The volume of CO in the original mixture is

View Answer

Correct choice: A

Explanation:

Among CO and CO2, only CO2 reacts with coke.
Vol .of CO2 =X lit then vol. of CO = 1-X
CO2 +C → 2CO
1 vol of CO2 gives 2 vol .of CO
X lit of CO2 gives 2X lit .of CO.
Final vol of mixture= (1-X) + 2X= 1+X=1.6 lit i.e X=0.6lit
Therefore volume of ‘CO’ in the mixture = 1-X= 1-0.6= 0.4lit i.e 400ml
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