Consider a sample containing 5.00 moles of a mona-tomic ideal gas that is taken from state A to state B by the following two pathways:
For each step, assume that the external pressure is constant and equals the final pressure of the gas for that step. Calculate q, w, ΔE, and ΔH for each step, and calculate overall values for each pathway. Explain how the overall values for the two pathways illustrate that ΔE and ΔH are state functions, whereas q and w are path functions.
Answer to relevant QuestionsConsider the following potential energy diagrams for two different reactions. Which plot represents an exothermic reaction? In plot a, do the reactants on average have stronger or weaker bonds than the products? In plot b, ...A 150.0-g sample of a metal at 75.0oC is added to 150.0 g of H2O at 15.0oC. The temperature of the water rises to 18.3oC. Calculate the specific heat capacity of the metal, assuming that all the heat lost by the metal is ...Consider the reaction 2HCl(aq) + Ba(OH)2(aq) → BaCl2(aq) + 2H2O(l) ΔH = –118 kJ Given the following data: C2H2(g) + 5/2 O2(g) → 2CO2(g) + H2O(l) ΔH = –1300. kJ C(s) + O2(g) → CO2(g) ΔH = –394 kJ H2(g) + ½ O2(g) → H2O(l) ΔH = -286 kJ calculate ΔH for the reaction 2C(s) + H2(g) → C2H2(g) A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 72 J of heat while 35 J of work is done on it. Step 2: The system absorbs 35 J of heat while performing 72 J of work. Calculate ...
Post your question