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Bomb calorimeters are the devices that are used to experimentally determine `DeltaH` and `DeltaU` of any reaction by measuring the temperature change in the water bath Hence , the experimatal data can be used for cross-checking theortical data, From the following theoretical data answer the question that follow: Thermodynamic data: `DeltaH_(f)^(@)Ch_(4)(g)=- 15 kcal //"mole", DeltaH_(f)^(@) CO_(2)(g)=-90 kcal//"mole",` `DeltaH_(f)^(@)H_(2)O(l)=-60 Kcal//"mole"` `S_(m)^(@) CH_(4)(g)= 40 cal//"mole Kelivn"` `S_(m)^(@) O(g)= 45 cal//"mole Kelivn"` `S_(m)^(@) H_(2)O(g)= 15 cal//"mole Kelivn"` `S_(m)^(@) CO_(2)(g)= 50 cal//"mole Kelivn"` Calorimeter data: (1) Water equivlent of calorimaeter = 36 gm (2) Sepcific heat capacity of water = `1 cal//gm .^(@)C` (2) mass of water inthe water bath =164 gm All data at 300 K, `R=2 cal//"mol "K` . 1. Calculate `DeltaU_("combustion")` of `CH_(4)(g)` at 300 K.A. `-195 kcal//"mole"`B. `-196.2 kcal//"mole"`C. `-193.8 kcal//"mole"`D. `-235 kcal//"mole"`

Answer» Correct Answer - c


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