All of the following chemical equations correspond to a standard enthalpy of formationEXCEPT
a) CaO(s) + C(s) + O2(g)→CaCO3(s)
b) H2(g) +½O2(g)→H2O(g)
c) H2(g) +½O2(g)→H2O(l)
d) N2(g) + 2 O2(g)→N2O4(g)e) C(s) + O2(g)→CO2(g)
Answer: a
Can someone explain why its answer A?
All of the following chemical equations correspond to a standard enthalpy of formationEXCEPT a) CaO(s) +...
Calculate the standard enthalpy change, ΔH°rxn, in kJ for the following chemical equation, using only the thermochemical equations below: CaCO3(s) → CaO(s) + CO2(g) Report your answer to three significant figures in scientific notation. Equations: ΔH°rxn (kJ) Ca(s) + CO2(g) + 1/2O2(g) → CaCO3(s) -812.5 2Ca(s) + O2(g) → 2CaO(s) -1270.3
Using Thermodynamic Data (∆Hf), calculate the enthalpy change (∆Hrxn) for the following reactions: Fe2O3 (s) + H2 (g) → Fe (s) + H2O (l) N2H3CH3 (l) + N2O4 (l) → H2O (g) + N2 (g) + CO2 (g) C6H12O6 (s) + O2 (g) → CO2 (g) + H2O (g)
Calculate the standard enthalpy of formation of solid calcium oxide (CaO) using the following thermochemical information: CaO(s) + CO2(g) CaCO3(s) H = -178.3 kJ C(s) + O2(g) CO2(g) H = -393.5 kJ 2 C(s) + 2 Ca(s) + 3 O2(g) 2 CaCO3(s) H = -2413.8 kJ H = kJ
Determine the standard enthalpy of formation of calcium carbonate from the thermochemical equations given below.Ca(OH)2(s) → CaO(s) + H2O()ΔrH° = 65.2 kJ/mol-rxnCa(OH)2(s) + CO2(g) → CaCO3(s) + H2O()ΔrH° = −113.8 kJ/mol-rxnC(s) + O2(g) → CO2(g)ΔrH° = −393.5 kJ/mol-rxn2 Ca(s) + O2(g) → 2 CaO(s)ΔrH° = −1270.2 kJ/mol-rxna.−1712.3 kJ/mol-rxnb.−1207.6 kJ/mol-rxnc.−980.6 kJ/mol-rxnd.−849.6 kJ/mol-rxne.−441.8 kJ/mol-rxn
A.Using standard heats of formation, calculate the standard enthalpy change for the following reaction. N2(g) + 3H2(g) = 2NH3(g) B.Using standard heats of formation, calculate the standard enthalpy change for the following reaction. CaCO3(s) = CaO(s) + CO2(g) C. A scientist measures the standard enthalpy change for the following reaction to be -2910.6 kJ: 2C2H6(g) + 7 O2(g) = 4CO2(g) + 6 H2O(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy...
Delta S is positive for the reaction__. a) CaO(s)+CO2(g)-->CaCO3(s) b) N2(g)+3H2(g)-->2NH3(g) c) 2SO3(g)--->2SO2(g) + O2(g) d) Ag+(aq)+Cl-(aq)--->AgCl(s) e) H2O(l)--->H2O(s) *I know that C is the correct answer, I just need a detailed explanation as to why that is the correct answer.
Calculate ΔH for the following reaction, CaO(s) + CO2(g) → CaCO3(s) given the thermochemical equations below. 2 Ca(s) + O2(g) → 2 CaO(s) ΔH = -1270.2 kJ C(s) + O2(g) → CO2(g) ΔH = -393.5 kJ 2 Ca(s) + 2 C(s) + 3 O2(g) → 2 CaCO3(s) ΔH = -2413.8 kJ A compound contains C, H and O as the elements. A 20.0 g-sample is comprised of 1.34 g H and also 8.00 g of C. What...
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
Using standard heats of formation, calculate the standard enthalpy change for the following reaction. CaCO3(s)—*CaO(s) + CO2(9) ANSWER: Submit Answer
e. -1135 Given the following reactions: CaCO3 (s)-> Cao (s) + CO2 (g) C (s, graphite) + O2 (g)-> Co2 (g) AH-393.5 kJ the enthalpy of the reaction CaCO3 (s) -> CaO (s) + C (s, graphite) + O2 (g) ΔH = 178.1 kJ is kJ Select one: 4 a. 7.01 x 10 b. 571.6 ) c. 215.4 d. -215.4 ie. -571.6 Check Given the data in the table below, AH for the reaction