Home
Class 12
CHEMISTRY
Given that , C(s) + O(2)(g) to CO(2)(g...

Given that ,
`C(s) + O_(2)(g) to CO_(2)(g), DeltaH^(@)=-xKJ`
`2CO(g) + O_(2)(g) to 2CO_(2), DeltaH^(@)=-yKJ` The enthalpy of formation of carbon monoxide will be

A

b-2a

B

`(2a-b)/(2)`

C

`(b-2a)/(2)`

D

2a-b

Text Solution

Verified by Experts

The correct Answer is:
C
`C + O_(2) to CO_(2), DeltaH^(@)=-aKJ`
`2CO+O_(2) to 2CO_(2) , DeltaH^(@)=-bKJ`
Formation of CO can be written as :
`C + (1)/(2)O_(2) to CO, DeltaH^(@)`= ?
Adding equation : `C+O_(2) to CO_(2) , DeltaH^(@) =-aKJ`
`CO_(2) to CO + 1/2 O_(2), DeltaH^(@)=b/2 KJ`
We get `DeltaH_(f)^(@)(CO) =b/2 -a =(b-2a)/(2)`
Promotional Banner

Similar Questions

Explore conceptually related problems

Given that C+O_(2)rarrCO_(2),DeltaH^(@)=-xKJ and 2CO+O_(2)rarr2CO_(2),DeltaH^(@)=-yKJ The enthalpy of formation of carbon monoxide will be

C(s)+O_(2)(g)toCO_(2)(g),DeltaH=-94 kcal 2CO(g)+O_(2)to2CO_(2),DeltaH=-135.2 kcal The heat of formation of CO(g) is

If C(s)+O_(2)(g)to CO_(2)(g),DeltaH=rand CO(g)+1/2O_(2)to CO_(2)(g),DeltaH=s then, the heat of formation of CO is

C(s)+(1)/(2)O_(2)(g)to CO(g), Delta H =- 42 kJ/mole CO(g)+(1)/(2)O_(2)(g)to CO_(2)(g) , Delta H =-24 kJ/mole The heat of formation of CO_(2) is

Consider the following reactions. DeltaH^(@) values of the reactions hve been given as -x, -y and z kJ. Fe_(3)O_(4)(s) to 3Fe(s) + 2O_(2)(g), DeltaH^(@) = z kJ 2Fe(s) + O_(2)(g) to 2FeO(s), DeltaH^(@) =-x kJ 4Fe(s) + 3O_(2)(g) to 2Fe_(2)O_(3)(s), DeltaH^(@) =-y kJ In the given set of reaction, -x//2 kJ refers to

Based on the following reaction C(graphite) + O_2(g)rarrCO_2(g),DeltaH=-394KJ//mol...(i) 2CO(g)+O_2(g)rarr2CO_2(g),DeltaH=-569KJ//mol...(ii) The heat of formation of CO will be

Form the thermochemical reactions. C(graphite) +1//2 O_(2)(g) to CO(g), triangleH=-110.5kJ CO(g)+1//2O_(2)(g) to CO_(2)(g), triangleH=-283.2kJ The enthalpy ofreaction of C(graphite) +O_(2)(g) to CO_(2)" is "

Consider the following reactions. I. C("graphite") + O_(2)(g) rarr CO_(2)(g) , DeltaH^@ = -x_(1)cal II> CO(g) + 1/2 O_(2)(g) rarr CO_(2)(g) , Delta H^(@) = -x_(2) cal Based on the above data, DeltaH_(f)^(@)(CO_(2)) is:

Given C(s)+O_(2)(g)rarr CO_(2)(g)+94.2 Kcal H_(2)(g)+2O_(2)(g)rarr CO_(2)(g)+2H_(2)O(l)+210.8 Kcal The heat of formation of methane in Kcal will be

Consider the following reactions: C(s)+O_(2)(g)toCO_(2)(g)+x " kJ" CO(g)+(1)/(2)O_(2)(g)toCO_(2)(g)+y" kJ" The heat formation of CO(g) is :