Write the thermochemical equation that would be used to represent the standard heat of formation of sodium bicarbon...
5 Determine the standard enthalpy of formation of Fe2O3(s) given the thermochemical equations below. 2Fe(s) + 3/2 O2(g) → Fe2O3(s) AH(Fe2O3) = ? Fe(s) + 3 H2O() Fe(OH)3(s) + 3/2 H2(g) AH° = +160.9 kJ/mol-rxn H2(g) + 1/2O2(g) → H2O(1) A.H° = -285.8 kJ/mol-rxn Fe2O3(s) + 3 H2O(1) ► Fe(OH),(s) A,Hº +288.6 kJ/mol-rxn
5. Using standard heats of formation, calculate AH for 4 FeO (s) + O2(g) → 2 Fe2O3 (s) AH1 of FeO (s) = -272.0 kJ/mol AHºf of Fe2O3 (s) = -825.5 kJ/mol 3. Given 3 C (s) + 4 H2(g) → C3H8 (9) AH = -103.85 kJ/mol C(s) + O2(g) + CO2(g) AH = -393.5 kJ/mol H2 (g) + 12 O2(g) → H2O (1) AH = -285.8 kJ/mol find AH for C3H8 (g) + 5 O2(g) → 3 CO2 (g)...
Sodium carbonate is used to manufacture glass. It is obtained by heating sodium bicarbonate as follows: 2 NaHCO3 (s) → Na2CO3 (s) + H2O (g) + CO2 (g) ΔH = +129.3 kJ This reaction is (endothermic/exothermic). How many grams of sodium carbonate are produced if 1252 kJ of heat are used to decompose the sodium bicarbonate? g Na2CO3 (4 SF) How much heat is required to decompose 15.65 grams of NaHCO3? kJ (4 SF) Blank 1: Blank 2: Blank 3:
Calculate the standard enthalpy of formation of solid calcium
carbonate (CaCO3) using the following thermochemical
information:
Calculate the standard enthalpy of formation of solid calcium carbonate (CaCo3) using the following thermochemical information: 2 Cao(s) 2 Ca(s) O2(g) AH 1270.2 kJ C(s) O2 (g) CO2 (g) AH 393.5 kJ AH 178.3 kJ CaO(s) CO2 (g) CaCO3(s) kJ AH
Practice Exercise 6.23 Write the thermochemical equation that would be used to represent the standard heat of formation of KBr(s) Enter the chemical equation: Edit Determine AHf AHf kJ exact number, no tolerance Open Show Work Click if you would like to Show Work for this question:
Calculate the standard enthalpy of formation of liquid water
(H2O) using the following thermochemical
information:
CH4(g) C(s) + 2 H2(g)
H = +74.8 kJ
CO2(g) C(s) + O2(g)
H = +393.5 kJ
CO2(g) + 2 H2O(l) CH4(g) + 2 O2(g)
H = +890.4 kJ
Calculate the standard enthalpy of formation of gaseous methane
(CH4) using the following thermochemical
information:
CO2(g) + 2
H2O(l) CH4(g) + 2 O2(g)
H = +890.4 kJ
CO2(g) C(s) + O2(g)
H = +393.5 kJ
2 H2O(l) 2 H2(g) + O2(g)
H = +571.7 kJ
Calculate the standard enthalpy of formation of gaseous
acetylene (C2H2) using the following
thermochemical information:
2
C2H2(g) + 5 O2(g) 4 CO2(g) + 2 H2O(l)
H = -2599.3 kJ
CO2(g) C(s) + O2(g)
H = +393.5 kJ
2 H2O(l) 2 H2(g) + O2(g)
H = +571.7 kJ
H = kJ
Calculate the standard enthalpy of formation of gaseous carbon
dioxide (CO2) using the following thermochemical
information:
2 C(s) + H2(g)
C2H2(g)
H = +226.8 kJ
2
C2H2(g) + 5 O2(g) 4 CO2(g) + 2 H2O(l)
H = -2599.3 kJ
2 H2O(l) 2 H2(g) + O2(g)
H = +571.7 kJ
H = _______kJ
Part 1 Calculate the grams of CO2 that would be produced. Express your answer with the appropriate units. ANSWER: m(CO2) = THE BICARBONATE DILEMMA Introduction: One of the most appetizing smells in the world might be that of freshly baked cakes and muffins. In order to make such tasty morsels light and fluffy, the substance known as sodium bicarbonate (NaHCO3) must be included in the recipe, Sodium bicarbonate, alias baking soda, is the substance that causes many baked goods to...