Use the information below to determine the enthalpy change that occurs when 15.2 g of Ca(s)...
Use the information below to determine the enthalpy change that occurs when 15.2 g of Ca(s) reacts with excess oxygen. 2 Ca(s) + O2(g) 2 CaO(s) AH = -1270kJ O-481.6 kJ 481.6 kJ 240.8 kJ 0-240.8 kJ
16. Use the thermochemical equations below to determine the enthalpy change for the following reaction (10 pts.): C(s) + O2(g) → CO2 (g) AH = -234 kJ sko (s) + CO2 (g) → SCO: (s) AH = +1184 kJ 2S60 (s) → 25r (s) + O2 (g) AH = +2440 kJ 2STCO3 (s) + 2Sr (s) + 2C (s) + 302 (9)
determine the enthalpy change
A student wishes to determine the enthalpy change for the decomposition of sulfur trioxide into sulfur and oxygen gas: 2 SO3 -- 2 S (s) + 3 O2 (g) After experiencing some difficulty getting the above reaction to proceed, the student decides to measure the enthalpy of two other reactions, and use those results to calculate the enthalpy of the above reaction: SO2 (g) -S (s) + O2 (9) AHrx = +296.8 kJ 2 SO2 (g)...
for 12. Using the reaction enthalpy data shown, determine the amount of heat released in each situation: 2 Ca(s) + O2(g) → 2 Cao (s) AH = -1,269.8 kJ a. if calcium reacts with 3 moles of O b. if 8 moles of calcium reacts with O2 c. if calcium and oxygen react to form 1 mole of Cao 13. Butane, CHao, is the fuel used in many hand-held lighters (see Figure 8.16). Based on the reaction enthalpy below, how...
Using the equations Ca (s)2 O (g) Сао (s) 2 H2 (g) Determine the enthalpy for the reaction Са (s) + 2 H0 () — Са(ОН)2 (s) + H2 (9). CaO (s) AH° = -635 kJ/mol -64 kJ/mol H2O ()Ca(OH)2 (s) AH O2 (g)2 H2O (I) AH° = -572 kJ/mol kJ/mol 1 2 3 4 6 C 5 7 8 9 +/- 0 x 100 LO 11.01 g of MgSO4 is placed into 100.0 mL of water. The water's temperature...
Determine the enthalpy change for CS20 + 302(g) + CO2(g) + 2SO2(g); AH= ? using the following three thermochemical equations, which will be referred to as reactions (A), (B), and (C). (A) 2C(s) + 202(g) 2002(g); AH= -787.0 kJ (B) C(s) + 25(s) → CS2(); AH= 87.9 kJ (C) SO2(g) → S(s) + O2(g); AH= 296.8 kJ 1. The enthalpy change for the unknown reaction is 2. Describe the action performed on each thermochemical reaction. Reaction (A) was Reaction (B)...
3. Use the thermochemical equations shown below to determine the enthalpy for the reaction for CH3COOH()2C(s) +2H2(g) + O2(g) 2CO2(g)+ 2H2OI)CH3COOH(l) + 202(B) AH 3484 kJ C(s)+ O2(g)CO2(g) AH= -1576 kJ AH= -2288 kJ 2H2O(I) 2H2(g)+ O2(g)
2. Use the thermochemical equations shown below to determine the enthalpy for the reaction: (5 marks) C3H8(0) + 5O2(g) →3CO2 + 4 H2O) CO2 +Cgraphite) + O2 AH° = 221.6KJ H2(g) + 1/2O2(g) +H2O AH = -160.3KJ 3 C(graphite) + 4H2(g) →C3H8(9) AH = -58.5KJ 3. Use the thermochemical equations shown below to determine the enthalpy for the reaction: (5 marks) SO2(g) →S(8) + O2(9) H2S(g) + 3/202(g) → H2SO3(1) H2SO3(1)→ H2O +SO2(g) H2S(9)+ 1/2O2(0)+S(8) + H2O) AH = -306KJ...
Isooctane C3H18 is a major component of gasoline. Determine the change in enthalpy for the combustion of 2.000 mol of isooctane from the following data: H2(g) + (1/2)02(g) + H2O(g) AH° = –241.8 kJ C(s) + O2(g) + CO2(g) AH° = -393.5 kJ 8C (s) + 9H2(g) → CgH 18 (1) AH° = -224.13 kJ Isooctane CgH 18 is a major component of gasoline. Determine the change in enthalpy for the combustion of 2.000 mol of isooctane from the following...
Using Hess's Law, determine the enthalpy change of the following reaction. CS2(1) + 3 O2(g) --> CO2(g) + 2 SO2(g) C(s) + O2(g) --> CO2(g) AH = -393.5 kJ/mol S(s) + O2(g) --> SO2(g) AH = -296.8 kJ/mol C(s) + 25(s) --> CS2(8) AH = +87.9 kJ/mol -899.2 kJ O-778.2 kJ -602.4 kJ - 1075.0 kJ