logo

Ask Questions, Get Answers

 
X
 Search
Want to ask us a question? Click here
Ad
Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class11  >>  Thermodynamics
0 votes

Given that $C+O_2 \rightarrow CO_2;\: \: \: \: \: \Delta H^{\circ} = -x\: kJ\: and\: 2CO+O_2 \rightarrow 2CO_2; \: \: \: \: \:\Delta H^{\circ} = -y\: kJ$ \[\] The standard enthalpy of formation of carbon monoxide is

$\begin {array} {1 1} (A)\;y-2x & \quad (B)\;\large\frac{(2x-y)}{2} \\ (C)\;\large\frac{(y-2x)}{2} & \quad (D)\;2x-y \end {array}$

Can you answer this question?
 
 

1 Answer

0 votes
Multiplying eq. (ii) by $ \large\frac{1}{2}$ and subtracting it from eq. (i) to get
$C(s) +\large\frac{1}{2}$$ O_2 \rightarrow CO;\: \: \: \: \: \: \: \: \: \: \Delta H=\large\frac{(y-2x)}{2}$
Ans : (C)
answered Mar 17, 2014 by thanvigandhi_1
 

Related questions

Ask Question
student study plans
x
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App
...