2. For the reaction we studied: 21 + S2Og- 2 + 2 SO AErxn AHrxn = -322 kJ %3D A. Use this value and your experimental activation energy value to draw an energy profile for the reaction with the energies appropriately scaled on the vertical axis. B. Label AErxn (AHrxn) and Ea on the graph. C. Calculate the Ea for the reverse reaction Reaction progress>
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- Consider the reaction Mn+ + ne- ⇌ M. If ΔG*c = ΔG* + (1-α)nFE and η = E – Eeq, prove that ic = io exp[-(1-α)nFηa)/RT)].Given Zn(s)| Zn 2+ (aq) (1M) || Ag+2+ (aq) (1M) | Ag (s) Eocell = 1.562V What will the Ecell be if the [Zn2+] = 0.75M and [Ag+] =0.25 M at 40.00oC (313.15K)? The overall reaction is Zn(s) + 2 Ag+ (aq) --> 2 Ag (s) + Zn 2+ (aq) (Answer has 3 digits after the decimal)Initial temp: 19.06 C 0.5 M concentration 200 mL of HCl and 200 mL of NaOH are combined in an insulated container. H+(aq) + OH-(aq) - - -> H2O (l) ∆H H++ = 0, ∆H OH−− = -230 kJ/mol, ∆H H2O = -286 kJ/mol ∆H reactants = ∆H H++ + ∆H OH−− = -230 + 0 = -230 kJ/mol ∆H reactants = -286 kJ/mol - ( -230 kJ/mol) = -56 kJ/mol H+ (aq) + OH− (aq) - - -> H2O (l) Using your observations and the stoichiometric relationships of the reaction, determine the number of moles that react. Show/upload your work.
- Determine the Ecell and ΔG for the reaction of 2AgNO3 (aq, 1.0M) + Sn(s) ---> Sn(NO3)2(aq, 0.25M) + 2Ag(s) Ag+1(aq) + e- ---> Ag (s) E°= 0.80V Sn2+ + 2e- ---> Sn(s) E°= -0.14VA chemistry grad student measures the performance of the new pump in his lab. The result is: Z=19.1 kPa·mm3·s-1 conver Z to mJ·s-1What is Ecell at 25°C for the reaction Ca(s) | Ca2+(2.898 M) || Sn2+(0.137 M) | Sn(s)? Report your answer to the hundredths place and do not include units. Half-reaction E° (V) Ca2+ + 2e- → Ca(s) -2.87 Sn2+ + 2e- → Sn(s) -0.14
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- Which processes shown in this figure involve the phasetransition H2O(l )----->H2O(g)?b) The equilibrium constant Keq for the reduction of nickel (II) oxide, NiO, to nickel metal at754°C is 255.4.NiO + CO Ni + CO2How would the reaction progress shift if the quantities of reagents housed in a 5.0 Litervessel, were as follows:NiO 2.5 moles Ni: 3.5 moles CO: 13.0 moles CO2 : 1.175 moles(c) If the total pressure in the vessel is 2.5 atm, find the partial pressures for CO and CO2 .A) Generate a graph of ln Ksp vs 1/T (K) and find the best-fitting line. This line equation will give you the slope, which is -∆H˚/R and an intercept of ∆S˚/R. B) Determine ∆G˚ at 298K Borax is also useful as a water softener. Hard water is caused primarily by the presence of magnesium and calcium ions, which enter the water supply from minerals (calcite, gypsum and dolomite) within an aquifer. Hard water will form deposits that clog drains. Borax will react with these ions in a single replacement reaction releasing free sodium ions, which do not react with water and produce deposits. C: Write a balanced chemical equation for the reaction of Borax with calcium and magnesium ions to produce an insoluble product that will in effect, remove these ions from the water supply, thereby 'softening' the water. Please help with parts A B and C