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Using Hess's Law to calculate net reaction enthalpy Dimethycurier, a useful organic solvent, is prepared in...
Dimethyl ether, a useful organic solvent, is prepared in two steps. In the first step, carbon dioxide and hydrogen react to form methanol and water: CO2(g) + 3H2(g) → CH3OH (l) + H2O(l) =ΔH−131.kJ In the second step, methanol reacts to form dimethyl ether and water: 2CH3OH (l) → CH3OCH3(g) + H2O (l) =ΔH8.kJ Calculate the net change in enthalpy for the formation of one mole of dimethyl ether from carbon dioxide and hydrogen from these reactions. Round your answer...
Dimethyl ether, a useful organic solvent, is prepared in two steps. In the first step, carbon dioxide and hydrogen react to form methanol and water: In the second step, methanol reacts to form dimethyl ether and water: Calculate the net change in enthalpy for the formation of one mole of dimethyl ether from carbon dioxide and hydrogen from these reactions. Round your answer to the nearest kJ kJ
enthalpy There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. In the first step, calcium carbide and water react to form acetylene and calcium hydroxide: Cac (s) + 2H,O(g) + CH (9) + Ca(OH),(s) In the second step, acetylene, carbon dioxide and water react to form acrylic acid 6C,H,9) + 3 CO (9) + 4H,O(9) 5CH,CHCO,H) AH=132. kJ Calculate the net change in enthalpy for the formation of one mole...
PROBLEM-SOLVING CLASS ACTIVITY 11 Use Hess's Law to calculate the enthalpy of formation of CH2OH: C(graphite) + 2 H2(g) + 1026) → CH2OH(1) Given the following data: CH2OH() • 02(9) + CO2(g) + 2H2O(1) AH°: -726.4 kJ/mol C(graphite). O2(g) → CO2(9) AH' = -393.5 kJ/mol H2(g) + 40269) → H2O(1) AH = -285.8 kJ/mol
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. In the first step, calcium carbide and water react to form acetylene and calcium hydroxide: CaC (s) + 2 H2O(g) - CH (9) + Ca(OH),(s) AH -414. kJ In the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6 C H (9) + 3 CO2(9) + 4H2O(g) - SCH,CHCO,H) AH-132. kJ Calculate the net change in enthalpy...
(D) SNU29) + 12 + 2HNO3(14) + NU19) 8) Determine the overall reaction, using Hess's Law to calculate the enthalpy of the reactions from the reaction step mechanism. Step1: 300,(9) ► N269) + 02(g) AH = -99.6 kJ Step 2: H2O(l) → H2(g) + 02(9) AH; = +285.8 kJ Step 3: Hz(9) + N2(g) + 3 02(9) → 2 HNO3(aq) AH; = -414.8 kJ Step 4: N2(g) + 02(9) ► NO(9) AH; = 90.2 kJ
3. Calculate the enthalpy of formation of carbon dioxide in the following reaction: C(s) + O2 (g) – CO2 (g) 213 Use the following equations: a) H20 (0) -- H2(g) + 103() AH',- +285.8 kJ/mol b) CH. (g) -2C (s) + 3H2(g) AH:- +84.7 kJ/mol c) 2CO2(g) +3H() - CH.(g) + (7/2) O, (g) AH,- +1560.7 kJ/mol
3 % 10 13 There are two steps in the usual industrial preparation of acrylic and the immediate precursor of several useful plastics in the first seep, calcium carbidean water react to form acetylene and calcium hydroxide: CoC (8) + 2H0(9) -- C.H.(0) + Ca(OH),(s) AH--141 In the second step, acetylene, carbon dioxide and water react to form acrylic acid 6CH (2) + 300,(9) + 4H,019) -- SCH,CHCO,H() AH-132.00 Calculate the net change in enthalpy for the formation of one...
a) Use Hess's law to calculate the enthalpy change for the reaction: 3C(s) + 4H2(g) + ½O2(g) → C3H8O(l) Given the following thermochemical equations: 2C3H8O(l) + 9O2(g) → 6CO2(g) + 8H2O(l) ΔH = -4042.6 kJ/mol C(s) + O2(g) → CO2(g) ΔH = -393.51 kJ/mol H2(g) + ½O2(g) → H2O(l) ΔH = -285.83 kJ/mol (in kJ/mol) A: -267.7 B: -302.6 C: -341.9 D: -386.3 E: -436.5 F: -493.3 G: -557.4 H: -629.9 b) Define if the following statement is an endothermic process or exothermic...
5. Calculate the enthalpy of formation of carbon dioxide in the following reaction: C(s) + O2(g) - CO. (g) 213 Use the following equations: 2) H.O (0) -- H() .O() AH: 285.8 kJ/mol b) CH. (g) -- 2C). 3H2(g) AH: +84.7 kJ/mol c) 200,(e) +3H.0 (6-- C.H. (B). (7/2)0,() AH - 1560.7 kJ/mol