1.

For the following process, `H_(2)(g)rarr2H(g)`. It absorbs `438kJmol^(-1)` . Thus,A. change in internal energy of the system is `219KJmol^(-1)`B. internal energy of the system is `438KJmol^(-1)`C. change in internal energy if `438KJmol^(-1)`D. internal energy of the system is `219KJmol^(-1)`

Answer» Correct Answer - D
Internal energy cannot be measured. However, change in internal energy can be measured `H-H` covalent bond breaks by absorbing `438KJmol^(-1)` energy.
Thus, increases in internal energy `(DeltaE)=438KJmol^(-1)` .


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