Get Answers to all your Questions

header-bg qa

Consider the reactions given below. On the basis of these reactions find out which of the algebraic relations given in options (i) to (iv) is correct?
(i) C(g) + 4H(g) \rightarrow CH_{4}(g); \Delta _{r}H=x\; kJ \; mol^{-1}
(ii)

C(graphite, s) + 2H_{2}(g) \rightarrow CH_{4}(g); \Delta _{r}H = y \; kJ \; mol ^{-1}

(i) x = y                  

(ii) x = 2y          

(iii) x >y    

(iv) x< y

Answers (1)

The answer is option (iii).  

Explanation: In the case of reaction b, the bonds are broken, but in the reaction a, the bonds are not broken. Although, same bonds are formed in both the cases.

Posted by

infoexpert22

View full answer