Can someone please help me with the following? 1) Is this reaction endothermic,
ID: 682278 • Letter: C
Question
Can someone please help me with the following? 1) Is this reaction endothermic, exothermic, or neither?2 NO2 (g) ----> N2O4 (g) + 13.7 kcal 2)Is this reaction endothermic, exothermic, or neither?
2H2 O(g) + 137 kcal ----> 2 H2 (g) + O2(g) 3) How much heat will be generated if we produce 23.9 grams ofcarbon dioxide from this process?
C(s) + O2 (g) ----> CO2(g) + 94.0 kcal 4)How much heat is needed to convert 337.3 g of ferric oxideto iron according to this reaction?
2 FE2 O3 (s) + 196.5 kcal -----> 4 Fe(s) + 3 O2(g) 5) How much heat is released by the combustion of 0.291 molesof acetone by the following reaction?
2 C3H6O(l) + 8 O2 (g) ----> 6 CO2 (g) + 6 H2 O(g) + 853.6kcal Can someone please help me with the following? 1) Is this reaction endothermic, exothermic, or neither?
2 NO2 (g) ----> N2O4 (g) + 13.7 kcal 2)Is this reaction endothermic, exothermic, or neither?
2H2 O(g) + 137 kcal ----> 2 H2 (g) + O2(g) 3) How much heat will be generated if we produce 23.9 grams ofcarbon dioxide from this process?
C(s) + O2 (g) ----> CO2(g) + 94.0 kcal 4)How much heat is needed to convert 337.3 g of ferric oxideto iron according to this reaction?
2 FE2 O3 (s) + 196.5 kcal -----> 4 Fe(s) + 3 O2(g) 5) How much heat is released by the combustion of 0.291 molesof acetone by the following reaction?
2 C3H6O(l) + 8 O2 (g) ----> 6 CO2 (g) + 6 H2 O(g) + 853.6kcal 3) How much heat will be generated if we produce 23.9 grams ofcarbon dioxide from this process?
C(s) + O2 (g) ----> CO2(g) + 94.0 kcal 4)How much heat is needed to convert 337.3 g of ferric oxideto iron according to this reaction?
2 FE2 O3 (s) + 196.5 kcal -----> 4 Fe(s) + 3 O2(g) 5) How much heat is released by the combustion of 0.291 molesof acetone by the following reaction?
2 C3H6O(l) + 8 O2 (g) ----> 6 CO2 (g) + 6 H2 O(g) + 853.6kcal
Explanation / Answer
1. 2 C(s) + O2 (g) ------> 2CO (g)+ 52.8 kcal is exothermic reaction becauseheat is released in this reaction. 2. 2 NH3 (g) + 22kcal ---> N2 (g) + 3 H2 (g)is endo thermic reaction becausereactants need 22 k Cal energy to form products as indicated by thereaction.
3. Heat released = (-94.0kJ/mol)(23.9g/(44g/mol)) = -51.06kJ 4. heat required = (337.3g/(159.69g/mol))(196.5kcal/2mol) = 207.53kcal 5. Heat released = (0.291mol)(-853.6kCal/2mol) = -124.20kCal 1. 2 C(s) + O2 (g) ------> 2CO (g)+ 52.8 kcal is exothermic reaction becauseheat is released in this reaction. 2. 2 NH3 (g) + 22kcal ---> N2 (g) + 3 H2 (g)
is endo thermic reaction becausereactants need 22 k Cal energy to form products as indicated by thereaction.
3. Heat released = (-94.0kJ/mol)(23.9g/(44g/mol)) = -51.06kJ 4. heat required = (337.3g/(159.69g/mol))(196.5kcal/2mol) = 207.53kcal 5. Heat released = (0.291mol)(-853.6kCal/2mol) = -124.20kCal 4. heat required = (337.3g/(159.69g/mol))(196.5kcal/2mol) = 207.53kcal 5. Heat released = (0.291mol)(-853.6kCal/2mol) = -124.20kCal