Q2: What is the maximum work that could be obtained from 3.65 g of zinc metal...
4. How many grams of zinc chloride could be formed from the reaction of 3.57 g of zinc with excess HCl? 5. Aluminum sulfide reacts with water to form aluminum hydroxide and hydrogen sulfide. (a) Write a balanced equation for this reaction. (b) How many grams of aluminum hydroxide can be obtained from 5.50 g of aluminum sulfide?
need help with 17 Question (1 point) The addition of 1.190 g of zinc metal to 0.100L of 0.1820 M HCl in a coffee cup calorimeter causes the temperature to increase from 15.00°C to 21.62°C. What is the value of than for the following reaction? Zn(s) + 2HCl(aq) - ZCI, (aq) +H,()
18. Identify the metal if during a 1.000 hour long 2 electron electrolysis reaction 8.388 g of metal is deposited using a constant current of 4.000 A. 19. The standard cell potential (F) of a voltaic cell constructed using the cell reaction below is 0.76 V: Zn(s) +2H (aq) Zn2+(aq)+ H2(g) With PH2 1.0 atm and [Zn2]-1.0 mol L-1, the cell potential is 0.45 V. The concentration of Ht in the cathode compartment ismol L-1, Long Answer 20. A galvanic...
Maximum Useful Work from a Fuel Cell. What is the maximum useful work which can be obtained from a hydrogen-oxygen fuel cell that produces 1.60 kg of water at 25°C? (Assume 1 atm pressure for the gases.)
Hydrogen gas was produced by reacting 0.976 g of zinc metal with excess hydrochloric acid. Write a balanced reaction equation (include states). If 376 mL of hydrogen gas is collected over water at 25 °C at a total pressure of 751 mm Hg, what was the experimental molar mass of Zn? 1. Write a balanced reaction equation (include states). 2. What was the experimental molar mass of Zn? Answer to the correct number of significant figures. 3. Calculate the %...
Zinc metal reacts with hydrochloric acid according to the following balanced equation: Zn(s)+2HCl(aq)→ ZnCl2(aq)+H2(g) When 0.105 g of Zn(s) is combined with enough HCl to make 50.4 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 22.2 ∘C to 24.7 ∘C. Find ΔHrxn for this reaction as written. (Use 1.00 g/mL for the density of the solution and 4.18 J/(g⋅∘C) as the specific heat capacity.) Express your answer in kilojoules...
Zinc metal reacts with hydrochloric acid according to the following balanced equation. Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) When 0.102 g of Zn(s) is combined with enough HCl to make 54.6 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 21.9 ∘C to 24.3 ∘C. Find ΔHrxn for this reaction as written. (Use 1.0 g/mL for the density of the solution and 4.18 J/g⋅∘C as the specific heat capacity
1. What distinguish a transition metal from a main group metal? 2. Why is zinc not considered a transition metal? 3. Write the electronic configuration of the following ions; V". Cr, Mn, Fe, Ni, Ti" 4. What are basic assumptions of Crystal Field Theory? 5. Compounds containing the Scion are colorless whereas those containing Ti* ion are colored. Explain. 6. Predict the number of unpaired electrons in [Cr(en) ions. 7. What are spectrochemical series? 8. The compound hexaminecobalt(III) chloride is...
Zinc metal reacts with hydrochloric acid according to the following balanced equation. Zn(s)+2HCl(aq)?ZnCl2(aq)+H2(g) When 0.112 g of Zn(s) is combined with enough HCl to make 54.9 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 21.7 ?C to 23.9 ?C. Find ?Hrxn for this reaction as written. (Use 1.0 g/mL for the density of the solution and 4.18 J/g??C as the specific heat capacity.) Answer should be in kJ/mol.
Calculate the maximum amount of work that can be obtained at 25°C from an electrochemical cell using Cd and PbO2 electrodes. HINT: Write a balanced chemical reaction first. Reduction Half Reaction Standard Reduction Potential (E"[v] PbO2(s) + 4H(aq) + 2e-Pb2+ (aq) + 2H2010 1.46 V Ca2+ (aq) + 2e + Ca(s) -0.40 V 179) 205 k) 0 102 kJ 0 359K 673 kJ