Which of the processes represented by the following chemical equations are exothermic?
Choose one or more:A. $$heat+CaO(s)+3C(s)→CaC2(s)+CO(g)B. $$CH4(g)+2O2(g)→CO2(g)+2H2O(g)+heatC. $$CH3OH(g)+32O2(g)→CO2(g)+2H2O(g) ΔH=−676kJ/molD. $$2H2O(g)→2H2(g)+O2(g) ΔH=+483.6kJ/molE. $$I2(s)→I2(g)F. $$H2O(g)→H2O(l)
B. CH4(g)+2O2(g)→CO2(g)+2H2O(g)+heat
C. CH3OH(g)+32O2(g)→CO2(g)+2H2O(g) ΔH=−676kJ/mol
F. H2O(g)→H2O(l)
above mentioned 3 reactions are examples of exothermic
Which of the processes represented by the following chemical equations are exothermic?Choose one or more:A. $$heat+CaO(s)+3C(s)→CaC2(s)+CO(g)B....
Which of the reactions are exothermic? 2Mg(s)+O2(g)⟶2MgO(s)+heat2Mg(s)+O2(g)⟶2MgO(s)+heat NH3(g)+HCl(g)⟶NH4Cl(s)+heatNH3(g)+HCl(g)⟶NH4Cl(s)+heat AgCl(s)+heat⟶Ag+(aq)+Cl−(aq)AgCl(s)+heat⟶Ag+(aq)+Cl−(aq) 2Fe2O3(s)+3C(s)+heat⟶4Fe(s)+3CO2(g)2Fe2O3(s)+3C(s)+heat⟶4Fe(s)+3CO2(g) C(graphite)+O2(g)⟶CO2(g)+heatC(graphite)+O2(g)⟶CO2(g)+heat CH4(g)+2O2(g)⟶CO2(g)+2H2O(l)+heat
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?
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...
2. (10 pts) Given the following data Ca(s)2C(graphite)CaC2(s) -62.8 kJ OH635.5 Ca(s)1/202(g) CaO(s) kJ CaO(s)H20()- Ca(OH)2(aq) OH 653.1 kJ 2CO2(g)H2O(l OH1300 C2H2(g)5/202(g) kJ C(graphite) O2(g)CO2(g) H= -393.5 kJ calculateH for the reaction (show your work for full credit) CaC2(s)+ 2H20()- Ca(OH)2(aq) CH2(g)
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...
Which of the reactions are exothermic? 2 Mg(s) + 0, (g) 2 MgO(s) + heat NH, (g) + HCl(g) NH,Cl(s) + heat AgCl(s) + heat — Ag+ (aq) + CI+ (aq) 2 Fe2O3(s) + 3 C(s) + heat - 4Fe(s) + 3 CO2(g) C(graphite) + O2(g) — CO2(g) + heat CH,(g) + 2O2(g) — CO2(g) + 2 H2O(1) + heat about us Careers privacy policy terms of use contact us help %
A) Calculate ?Hrxn for the following reaction: CaO(s)+CO2(g)?CaCO3(s) Use the following reactions and given ?H values: Ca(s)+CO2(g)+12O2(g)?CaCO3(s), ?H= -812.8 kJ 2Ca(s)+O2(g)?2CaO(s), ?H= -1269.8 kJ B) Calculate ? Hrxn for the following reaction: CH4(g)+4Cl2(g)?CCl4(g)+4HCl(g) given these reactions and their ?H values: C(s)+2H2(g) ---> CH4(g), ? H=-74.6kJ C(s)+2Cl2(g) ---> CCl4(g), ? H=-95.7kL H2(g)+Cl2----> 2HCl(g), ? H=-184.6kJ
1) The reaction below is exothermic 2SO2 (g) + O2(g) ⇌ 2SO3(g) + heat Le Châtelier's Principle predicts that _______ will result in an increase in the number of moles of SO3 (g) in the reaction container. Which direction will the reaction shift: ? left or right A) increasing the volume of the container B) increasing the amount of SO2 C) removing some oxygen D) increasing the temperature E) decreasing the pressure 2) Consider the following reaction at equilibrium: 2SO2 (g) + O2 (g) ⇌ 2SO3 (g) + heat ΔH...
Consider following chemical reactions: 1) CH2(g) + 2O2(g) → CO2(g) + 2H20(1) 2) C(s) + O2(g) → CO2(g) 3) 2C(s) + O2(g) 200(g) 4) 3C(s) + 2H2O(l) → CH4(9) + CO2(g) H2O(l) indicates that H2O is in liquid state. If the Enthalpy of reaction for reaction 1, 2, and 3 are -890.4kj, -393.5kj and -221.Okj respectively, try to figure out the Enthalpy of reaction for reaction 4. Please show your work.
please help Consider following chemical reactions: 1) CH.(g) + 2O2(g) → CO2(g) + 2H2O(1) 2) C(s) + O2(g) → CO2(g) 3) 2C(s) + O2(g) - 200(g) 4) 3C(s) + 2H2O) CH4(g) + 2COg) H2O(l) indicates that H20 is in liquid state. If the Enthalpy of reaction for reaction 1, 2, and 3 are -890.4kj, -393.5kj and - 221.Okj respectively; try to figure out the Enthalpy of reaction for reaction 4. Please show your work.