STP .
P = 1 atm
T = 273 K
moles of C2H2 = P V / R T
= 1 x 0.202 / 0.0821 x 273
= 9.01 x 10^-3
moles ratio of C2H2 = 9.01 x 10^-3 / 2
= 4.50 x 10^-3
moles of O2 = P V / R T
= 1 x 0.05 / 0.0821 x 273
= 2.23 x 10^-3
moles ratio of O2 = 2.23 x 10^-3 / 5 = 4.46 x 10^-4
limiting reagent is O2
2C2H2 + 5 O2 -----------------> 4CO2 + 2H2O , DH = -2320 kJ / mol
5 moles O2 -------------------> 2320 kJ
4.46 x 10^-4 mole O2 ----------------------> 2320 x 4.46 x 10^-4 / 5 = 0.207
heat released = 0.207 kJ
Nane CHE I11 3. Calculate the heat released (kl) in the reaction of 0.2021. of acetylene...
all 3. Calculate the heat released (kJ) in the reaction of 1.35L of acetylene (C2H2) and 0.235L of hydrogen gas at STP to form ethane gas as determined by the following equation: C2H2(g) + 2H2() → C2H6(g) Given: 2C2H2(g) +502(g) + 4CO2(g) + 2H20(g) 2C2H.(g) + 702(g) → 4CO2(g) + 6H20(g) 2H2(g) + O2(g) → 2H2O(g) AH = -2320 kJ/mol AH = -3040 kJ/mol AH = -572 kJ/mol
39. Given the following reaction: 2C2Hs + 70, > 4CO2 + 6H20 And given: 2H2 + O2 → 2H20 C+02 0 2C + 3H2 → GH AH = 384. kl/mol AH = -394. kl/mol AH = 192.0 kJ/mol Calculate the energy produced if 20. grams of CHe burn in air? 40) Write abbreviated condensed) configurations (noble gas core) for the following a. Chromium b. N.
1. Acetylene (C2H2) undergoes combustion in excess oxygen to generate gaseous carbon dioxide and water. Given AHC02(8)] = -393.5 kl/mol, AH® [H20(8)] = -241.8 kJ/mol, and AH(CH2(g)] = 226.6 kJ/mol, how much energy is released (kl) when 32.5L of CO2 gas are produced at 3.5atm and 255°C? 2C₂H2 (g) + 302 (5) 4CO2(g) + 2 H₂Org)
DUE APRIL Name CHE 111 ) undergoes combustion in excess oxygen to generate gaseous carbon dioxide and energy is released (k) when 32.5L of CO2 gas are produced at 3.5atm and 1. Acetylene (C2H2 Given AH"dco,dg)]s-393.5 kl/mol ΔΗ-(H20(g)]--24 1.8 kJ/mol, and ARYc1ldgJ- 226.6 kJ/mol, how much 255 C? 2. The following questions refer to the combustion reaction of pentaborane with oxygen at STP to produce B20s and H2Co. Given the following values; calculate AHrn for the combustion reaction when 85.5...
3) Titanium dioxide is synthesized in the laboratory by hydrolysis, using the following reaction: н,--763 187.6 -945 -92.31 What change in internal energy would occur at 298K if 1 mol of TiC4) were added to H20(0) and all of the HCI evolved as gas? 4) Calculate the enthalpy of formation of acetylene: Given: 2C2H2lg)+502)4CO2)2H2 2599 kJ 2H2 O 2H20 393.5 k 285.8 kJ 5) The following question refers to the enthalpy of combustion of styrene monomer, CHa There should be...