Chemistry, asked by Nahom24481, 9 months ago

मेथेन के दहन के लिए \Delta U^\Theta का मान – X kJ mol⁻¹ है। इसके लिए \Delta H^\Theta का मान होगा-
(i) = \Delta U^\Theta
(ii) > \Delta U^\Theta
(iii) < \Delta U^\Theta
(iv) = 0

Answers

Answered by prashantyadav9336
0

Explanation:

ii) is the answer

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Answered by ankugraveiens
0

विकल्प (iii) \Delta H^\circ &lt; \Delta U^\circ  सही है |

Explanation:

चुकि  ,     \Delta H^{\circ} = \Delta U^{\circ} + \Delta n_g RT   और  \Delta U^{\circ} = - X kJ mol^{-1}

तथा ,

              CH_4(g) + 2O_2(g) \rightarrow CO_2(g) + 2H_2O(liq)

          \Delta n_g = \sum n_g(Product) - \sum n_g(Reactant ) = 1 - 3 = -2

अर्थात , \Delta H^{\circ} = \Delta U^{\circ} + \Delta n_g RT  

             \Delta H^{\circ} = (-X) + (-2) RT

अतः  \Delta H^\circ &lt; \Delta U^\circ

इसलिए , विकल्प (iii)   सही है  

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