If the total internal energy, total pressure and the total volume of a phenomenon are given, then by using the sum of the energy and the product of the pressure and volume is generally used to calculate the enthalpy. The general expression of the enthalpy is shown below, ...
How do you calculate Helmholtz free energy from partition function? Helmholtz Free Energy f=u−T(u/T+kBlnz)=−kBTlnz. We note that this value of f, which can be computed from only the canonical partition function and temperature, corresponds to the global minimum over all macrostates. ...
Consider the following reaction: 2Mg(s)+O_2(g) ---> 2MgO(s); Delta H = -1204 kJ Part A Is this reaction exothermic or endothermic? exothermic endothermic Part B Calculate the amount of heat transferred whe... Consider the...
4. Octane, C_8H_{18}, burns according to the balanced equation: 2 C_8H_{18} (l) + 25 O_2 (g) rightarrow 16 CO_2 (g) + 18 H_2O(l) Delta H_{rxn} = -10,920 kj/mol If an engine burns 277 moles of C_8H_{ Gasohol is a fue...
What is delta G if delta H is 58.7 kJ and delta S is 129 J/K? 2Ca(s)+O2(g) --> 2CaO(s) Delta H^o_rxn = -1269.8 kJ; Delta S^o_rxn = -364.6 J/K Calculate the free energy change for the reaction at 33 degree C. 1. Calculate delta S at 27*c: 2...
How do you calculate the half-life of a first-order reaction? The rate constant, k, for a first-order reaction is equal to 4.3 x 10-4 s-1. What is the half-life for the reaction? a. 1.2 x 103 s b. 1.6 x 103 s c. 2.4 x 103 s d. 3.0 x 10-4 s ...
S(s) + O_2(g) \to SO2 (g) \ \ \ \Delta H_{rxn} = -296.8 kJ 2SO_2 (g) + O_2 (g) \to 2SO_3 (g) \ \ \ \Delta H_{rxn} = Using the following information and Hess's Law, calculate the change in enthalpy for the reaction CH_4(g) +...
How many kJ of heat are required to raise the temperature of 100.0 g of water from 25.0 degrees C to 50 degrees C? Calculate the amount of heat required to vaporize 84.8 g of water at its boiling point. Calculate the total heat required to vapo...
A chemist measures the energy change Delta H during the following reaction: 2NH_3 (g) to N_2(g) + 3H_2 (g) Delta H = 160 kJ Find the reaction is endothermic or exothermic. Calculate the enthalpy of reaction for the following:...
How do you calculate the standard entropy change for a reaction using standard entropy values? Entropy Change: Entropy refers to the state of disorder of a system, which in chemical reaction changes calculated by the summation of the entropies of the product subtracted to ...