
what type of reaction does this reaction take? a. Ca (s)+ O2(g)=CaO(s)
Consider the combustion reaction for calcium: 2 Ca(s) + O2(g) ⇾ 2 CaO(s) ΔH = -1270 kJ, ΔS = -365 J/K a) Calculate ΔG at 25°C and determine whether the reaction is spontaneous. b) Determine at what temperature (if any) the reaction is spontaneous. Please show all work and steps, thank you!
follows: Ca(s) + O2(g) + CaO(s) 2a. 2b. 2c. 2d. 2e. Balance the reaction equation. Which substance is the limiting reactant? Show all calculations. How many grams of excess reactant remain? What is the theoretical yield (in grams) of calcium oxide? What is the % yield if only 3.80g of calcium oxide was produced? (2) (4) (2) (2) (2)
2. (10 pts) Given the following data Ca(s)2C(graphite)CaC2(s) -62.8 kJ OH635.5 Ca(s)1/202(g) CaO(s) kJ CaO(s)H20()- Ca(OH)2(aq) OH 653.1 kJ 2CO2(g)H2O(l OH1300 C2H2(g)5/202(g) kJ C(graphite) O2(g)CO2(g) H= -393.5 kJ calculateH for the reaction (show your work for full credit) CaC2(s)+ 2H20()- Ca(OH)2(aq) CH2(g)
IU. AS is positive for the reaction A) CaO (s) + CO2 (g) CaCO3 (S) B) N2 (g) + 3H2(g) → 2NH3 (g) C) 2503 (g) - 2802 (g) + O2 (g) D) Ag+ (aq) + Cl- (aq) → AgCl (s) E) H20 (1) + H20 (s) 11. AS is positive for the reaction A)2 Ca(s) + O2 (g) 2 Cao (s) B) 2 KClO3 (s) 2KCI(S) + 30 (g) C) HCl (8) + NH3 (8) ► NH4Cl (s) D)...
units and measurements
equations and stoichiometry
follows: Ca(s) + O2(g) + CaO(s) 2a. 2b. 2c. 2d. 2e. Balance the reaction equation. Which substance is the limiting reactant? Show all calculations. How many grams of excess reactant remain? What is the theoretical yield (in grams) of calcium oxide? What is the % yield if only 3.80g of calcium oxide was produced? (2) (4) (2) (2) (2)
Calculate DHrxn for the reaction: CaO(s) + CO2(g) à CaCO3(s) given these reactions and their DH’s: 1) Ca(s) + CO2(g) + ½ O2(g) à CaCO3(s) DH = -814.1kJ 2) 2Ca(s) + O2(g) à 2 CaO (s) DH = -1269.8kJ
Calculate D (delta) Hrxn for the reaction: CaO(s) + CO2(g) -----> CaCO3(s) given these reactions and their DH’s: 1) Ca(s) + CO2(g) + ½ O2(g) -----> CaCO3(s) D(delta)H = -814.1kJ 2) 2Ca(s) + O2(g) -----> 2 CaO (s) D(delta)H = -1269.8kJ
given the following reaction caco3(s)--->cao(s) + co2(g) delta h = 178.1kj C(s,graphite) + O2(g) ---> CO2(g) deltaH=-393.5kj the enthalpy of the reaction CaCO3(s)--->CaO(s) + C(s,graphite) + O2(g) is ________kj.
Calculate AH for the following reaction, CaO(s) + CO2(g) CaCO3(s) given the thermochemical equations below. 2 Ca(s) + O2(g) + 2 Cao(s) AH = -1270.2 kJ C(s) + O2(g) CO2(g) AH = -393.5 kJ 2 Ca(s) + 2 C(s) + 3 O2(g) → 2 CaCO3(s) AH = -2413.8 kJ 0-750.1 kJ O +350.2 kJ 0 -178.3 kJ O +2870.6 kJ
Calculate AG for the following reaction at 25°C. 2 Ca(s) + O2(g) → 2 Ca(s) (J/K mol) Substance AH (kJ/mol AG (kJ/mol) Ca(s) Ca2+(aq) CaO(s) Ca(OH)2(5) CaF2(5) CaCl(s) O(g) 028) O3(aq) Oz(8) -542.96 -635.6 -986.6 -1,214.6 -794.96 249.4 -553.0 -604.2 -896.8 -1,161.9 -750.19 230.1 41.6 -55.2 39.8 83.4 68.87 113.8 160.95 205.0 110.88 237.6 -12.09 142.2 16.3 163.4