1.

Consider the reaction given below. On the basis of these reactions find out which of the algebric relations given in options (i) to (iv) is correct? (i) C(g) + 4H(g) to CH_(4)(g), Delta_(r)H = x kJ"mol"^(-1) (ii) C("graphite") + 2H_(2)(g) to CH_(4)(g), Delta_(r)H = y kJ"mol"^(-1).

Answer»

x = y
x = 2y
`x GT y`
`x LT y`

SOLUTION :The energy RELEASED in Eq.(a is more than the energy released in Eq.(b) because in Eq.(b), some energy is used up to break the bonds of hydrogen molecule.


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