Consider this reaction, which occurs in the atmosphere and contributes to photochemical smog:
ZnO(s) + H2O(l) →Zn(OH)2(aq)
If there is 16.61 g ZnO and excess H2O present, the reaction yields 18.0 g Zn(OH)2. Calculate the percent yield for the reaction.
Consider this reaction, which occurs in the atmosphere and contributes to photochemical smog: ZnO(s) + H2O(l)...
Consider this reaction, which occurs in the atmosphere and contributes to photochemical smog: H2(g) + I2(s) →2HI(g) If there is 17.29 g H2 and excess I2 present, the reaction yields 1700 g HI. Calculate the percent yield for the reaction.
Mercury cells as “button” batteries are very common and consist of HgO, ZnO, and Zn(OH)2 in a KOH paste. Useful half-cell reactions: HgO(s) + H2O(l) + 2e = Hg(l) + 2OH-(aq) eo = 0.0977 V Zn(OH)42-(aq) + 2e = Zn(s) + 4OH-(aq) eo = -1.285 V Zn(OH)42-(aq) = ZnO(s) + H2O(l) + 2OH-(aq) A)Such batteries have a + sign marked on them. Which half-reaction is occurring at the electrode so marked? B)Draw a schematic of a mercury...
Review l Constants i Per One of the reactions that occurs during photochemical smog formation is the following: NO,(8) +0,(8) NO(g) +0() Standard thermodynamic quantities for selected substances at 25°C Part A Use standard free energies of formation to determine AG for this reaction at 25°C Express the free energy change to four significant figures and include the appropriate units. h + ? AG- Substance AG (kJ/mol) O2(g) 0 Os(s) +163.2 CO() 1372 CO,() -3944 N. (K) 0 NO() +87.6...
Metal oxides can be reduced with hydrogen gas to give the metal. H2(g) ZnO(s) H2O(g) +Zn(s) Compound Ha(g) Zno AH(kJ/mol) AG (kJ/mol) S (J/Kemol) 130.7 -348.3 43.6 -318.3 H2O(g) Zn(s) -241.8 188.8 -228.6 41.6 What is the entropy change for the reaction? Errent 13 56.1 J/K 2. -56.1 J/K Cacb180.8)- (u 190.) 3. 404.7 J/K 43.6 J/K 4. Metal oxides can be reduced with hydrogen gas to give the metal. H2O(g) +Zn(s) H2(g)+ZnO(s) AG (kJ/mol) AH (kJ/mol) S(J/Kemol) 130.7 Compound...
The standard cell potential (Eocell) of the zinc-air battery is 1.65V. If at 25.0oC the partial pressure of oxygen in the air diffusing its cathode is 0.24 atm, what is the cell potential (Ecell)? Assume the cell reaction is: 2 Zn(s) + O2(g) yields 2 ZnO(s) The standard reduction potentials of the half-reactions in zinc-air batteries are: ZnO(s) +H2O(l) + 2e- yields Zn(s) + 2OH-(aq) Eored = -1.25V O2(g) + 2 H2O(l) + 4e- yields 4 OH-(aq) Eored= 0.401 Should...
Consider the following reaction: Ba(OH)2 (aq) + H2SO4 (aq) ⟶ BaSO4 (s) + 2 H2O (l) If you add an excess of sulfuric acid to 85.67 g of barium hydroxide, how many grams of water will you expect to produce?
Consider the reaction between CH3CHO(l) and O2(g) to form CO2(g) and H2O(l). If the percent yield of CO2(g) is 56.0% and 18.0 grams of CO2(g) forms, determine the theoretical yield of CO2(g) in moles.
Part A. Which of the following is not a redox reaction? H2O(l) + NH3(g) NH4+(aq) + OH–(aq) 2H2(g) + O2(g) 2H2O(l) Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g) FeSO4(aq) + K2Cr2O7(aq) + 7H2SO4(aq) Cr2(SO4)3(aq) + 3Fe2(SO4)3(aq) + K2SO4(aq) + 7H2O(l) Cl2(g) + 2KBr(aq) Br2(l) + 2KCl(aq) Part B. A 43.46 mL sample of Na2SO3 was titrated with 68.99 mL of 0.128 M K2Cr2O7 solution in the presence of H2SO4. Calculate the molarity of the Na2SO3 solution. Enter to 3 decimal...
1. Consider the reaction: NaHCO3(aq) + HCl(aq) → NaCl(aq) + CO2(g) + H2O(l) Question: 0.056 moles of NaHCO3 are reacted with excess HCl. 2.267 g of CO2 were produced. What is the percent yield of CO2?
Ling Pool 3 Time Remaining:04:34:08 1. Consider the unbalanced equation for the following reaction: H2O(l) + Mg3N2(aq) - MgO(s) + NH3(g) If 2.20 moles of H2O(l) reacts with an excess of Mg3N2(aq) and 0.823 moles of NH3(g) is formed, determine the percent yield of NH3(9). 34.7% 31.4% 56.0% 49.8% 47.6% Use the slider to rate your confidence on this question.