Which of the following substances have a standard heat of formation (Delta H_f degree) of zero?...
Which of the substances have a standard heat of formation (AH) of zero? 0 Fe at 1200 °C 0,(g) at 25.0 °C and 1 atm C1,(g) at 2 atm C, H.(g) at standard conditions
Which of the following substances has/have a non-zero value for enthalpy of formation at 25 °C and 1.00 atm pressure? 1. O (g) (gaseous atomic oxygen) 2. O2 (g) (oxygen gas molecule) 3. O3 (g) (Ozone gas) o 1 only O 2 only o 3 only 1 and 3 only 1.2. and 3
Use the standard reaction enthalpies given below to determine Delta H_rxn degree for the following reaction: 2 S(s) + 3 O_2(g) rightarrow 2SO_3(g) Delta H_rxn degree Given: SO_2(g) rightarrow S(s) + O_2(g) Delta H_rxn degree = +296.8 kJ 2SO_2(g) + O_2(g) rightarrow 2 SO_3(g) Delta H_rxn degree = -197.8 kJ Name those compounds? Li_2SO_3 Al_2S_3 P_2O_3 COBr_2-6H_2O
Use the standard reaction enthalpies given below to determine Delta H degree _rxn for the following reaction: 2 S(s) + 3 O_2(g) rightarrow 2 SO_3(g) Delta H degree _rxn = ? Given: SO_2(g) rightarrow S(s) + O_2(g) Delta H degree _rxn = +296.8 kJ 2 SO_2(g) + O_2(g) rightarrow 2 SO_3(g) Delta H degree rxn = -197.8 kJ Show all your work!
For the reaction N_2(g) + 3 H_2(g) rightarrow 2 NH_3(g) Delta G degree = -23.6 kJ and Delta S degree = -198.7 J/K at 345 K and 1 atm. This reaction is (reactant, product) favored under standard conditions at 345 K. The standard enthalpy change for the reaction of 2.30 moles of N_2(g) at this temperature would be kJ. For the reaction 2 H_2O_2(l) rightarrow 2 H_2O(l) + O_2(g) Delta G degree = -236.9 kJ and Delta H degree =...
Calculate the enthalpy of formation of SO_2(g) from the standard enthalpy changes of the following reactions: SO_2(g) + O_2(g) rightarrow 2 SO_3(g) Delta H degree _r times n = - 196 kJ S(s) + 3 O_2(g) rightarrow 2 SO_3(g) Delta H degree _r times n = - 790 kJ S(s) + O_2(g) rightarrow SO_2(g) Delta H degree _r times n = Number _______ kJ
For which of the following substances is the standard free energy of formation not equal to zero at 298 K.? A) Cr(s) B)Kr(g) C)Ce(s) D)Na(g) E)O2(g)
Calculate the standard entropy, Delta S_rxn^degree, of the following reaction at 25.0 degree C using the data in this table. The standard enthalpy of the reaction, Delta H_rxn^degree, is -633.1 kJ middot mol^-1. 3C_2 H_2(t) rightarrow C_6 H_6 (l) Delta S_rxn^degree = Number J middot K^-1 middot mol^-1 Then, calculate the standard Gibbs free energy of the reaction, Delta G_rxn^degree. Delta G_rxn^degree = Number kJ middot mol^-1 Finally, determine which direction the reaction is spontaneous as written at 25.0 degree...
Consider the reaction: FeO (s) + Fe (s) + O_2 (g) rightarrow Fe_2O_3 (s) Given the following table of thermodynamic data, Substance Delta H_f degree S degree FeO (S) -271.9 kJ/mol 60.75 J/mol - K Fe (s) 0 27.15 O_2 (g) 0 205.0 Fe_2O_3 (S) -822.16 89.96 determine the temperature (in degree C) above which the reaction is nonspontaneous.
How many moles of gas are there in a 45.0 L container at 25.0 degree C and 500.0 mm Hg? (R - 0.082 L Atm/ mol.K) Sodium bicarbonate is reacted with concentrated hydrochloric acid at 37.0 degree C and 1.00 aim. The reaction of 6.00 kg of bicarbonate with excess hydrochloric acid under these conditions w ill produce w hat volume of the CO_2 gas? The value of Delta H degree for the reaction below is -482 kJ. Calculate the...