Chemical Thermodynamics Question 310

Question: If (i) $ C+O_2\to CO_2 $ , (ii) $ C+1/2O_2\to CO $ , (iii) $ CO+1/2O_2\to CO_2 $ , the heats of reaction are $ Q,,-12,,-10 $ respectively. Then $ Q= $ [Orissa JEE 2004]

Options:

A) - 2

B) 2

C) - 22

D) - 16

Show Answer

Answer:

Correct Answer: C

Solution:

$ C+O_2\to CO_2 $ ; $ \Delta H=q $

$ C+1/2O_2\to CO $ ; $ \Delta H=-12 $ -..(i) $ CO+1/2O_2\to CO_2 $ ; $ \Delta H=-10 $ -..(ii) adding equation (i) and (ii) we can get $ \Delta H=-12+(-10)=-22 $



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक