For which of the following reactions is ?H?rxn equal to ?H?f of the product(s)?
You do not need to look up any values to answer this question.
Check all that apply.
H2O2(g)?12O2(g)+H2O(g) |
Na(s)+12F2(l)?NaF(s) |
2H2(g)+O2(g)?2H2O(g) |
2Na(s)+F2(g)?2NaF(s) |
H2(g)+12O2(g)?H2O(g) |
Na(s)+12F2(g)?NaF(s) |
For which of the following reactions is ?H?rxn equal to ?H?f of the product(s)? You do...
please and thank you :) Part A For which of the following reactions is A Han equal to AH of the product(s)?You do not need to look up any values to answer this question. Check all that apply. View Available Hint(s) CO(g) + O2(g) + CO2(g) C(s, graphite) + O2(8+CO(E) 0 CaCO3(g) +CaO + CO (8) Na(s) + F2(g)--NaF(s) Na(s) + F2 (1) NaF(s) 2Na(s)+F2(6)+2NaF (8) Submit Formation Reactions Part A The standard heat of formation, AH, is defined as...
The standard heat of formation, ΔH∘f, is defined as the enthalpy change for the formation of one mole of substance from its constituent elements in their standard states. Thus, elements in their standard states have ΔH∘f=0. Heat of formation values can be used to calculate the enthalpy change of any reaction. Consider, for example, the reaction 2NO(g)+O2(g)⇌2NO2(g) with heat of formation values given by the following table: Substance ΔH∘f (kJ/mol) NO(g) 90.2 O2(g) 0 NO2(g) 33.2 Then the standard heat...
For each of the following reactions, predict the sign of ΔS°. 2Na(s) + Cl2(g) → 2NaCl(s) KBr(s) → K+(aq) + Br−(aq) 2H2(g) + O2(g) → 2H2O(l) C2H2(g) + 4F2(g) → 2CF4(g) + H2(g)
For which one of the following reactions will delta H be approximately (or exactly) equal to delta E? H2(g) + Br2(g) ---> 2HBr(g) H2O(l) ---> H2O(g) CaCO3(s) ---> CaO(s) + CO2(g) 2H(g) + O(g) ---> H2O(l) CH4(g) + 2O2(g) ---> CO2(g) + 2H2O(l)
For which of the following reactions is AHequal to AH of the product(s)?You do not need to look up any values to answer this question. IXn Check all that apply. View Available Hint(s) CO(g)02(g)CO2(g) C(s, graphite) O2 (g)CO2 (g) BaCO3(s) Ba0(s) +CO2(g) Li(s)Cl2()LiCl(s) Li(s)Cl2(g)LICI(s) 2Li (s)Cl2 (g)2L1C1(s)
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
QUESTION 5 All of the following reactions concerning alkali metals are correct except 2Na (s) + 2H2O (I) 2NaOH (aq) + H2 (g) 2NaH (s) 2Na (s)+ H2 (g) 2Na (s) + Cl2 (g) 2NaCl (s) Na (s) + O2 (g)NaO2 (s) 2Na (s)+ S (s)Na2S (s)
What is the enthalpy change, ΔH∘rxn , for each of the following reactions? 1.2.3.Ag+(aq)+Li(s)Fe(s)+2Na+(aq)2K(s)+2H2O(l)→→→Ag(s)+Li+(aq)Fe2+(aq)+2Na(s)2KOH(aq)+H2(g) Express your answers in kilojoules to four significant figures separated by commas.
calculate enthalpy of H for the reaction N2H4(l) + 2H2O(l) -> N2(g) + 4H2)(l) Given the reactions N2H4(l) + O2(g) -> N2(g) + 2H2O(l) Enthalpy of H = -6.22.2 kJ H2(g) + (1/2)O2(g) -> H2O(l) enthalpy of H = -285.8 kJ/mol H2(g) + O2(g) -> H2O2(l) enthalpy of H = -187.8 kJ
The change in entropy, ΔS°rxn, is related to the the change in the number of moles of gas molecules, Δngas. Determine the change in the moles of gas for each of the following reactions and decide if the entropy increases, decreases, or has little or no change. a) 2H2(g) +O2(g)->2H2O b)C2H4(g) +H2(g)-> C2H6(g) c) CH4(g) + 2O2(g) -> CO2(g)+2H2O(l) d) PCL5(s)--> PCL3(l) + CL2(g)