the Half reaction : 2H2O(l) ->4H+(aq) + O2(g) +4e-
Examine the half-reaction you have just written. How would you test for the presence of the other, non-gaseous product being formed?
If H+ is being considered as the other non-gaseous product, then it can be tested by measuring pH of the solution using a pH meter or a litmus paper. Production of H+ will decrease the pH and will turn blue litmus red.
the Half reaction : 2H2O(l) ->4H+(aq) + O2(g) +4e- Examine the half-reaction you have just written....
Previous Tries were: 1st Try: 2H2O --> O2 + 4H+ + 4e- Ag --> Ag+ + e- 2F- --> F2 + 2e- F2 + 2e- --> 2F- Second Try: O2 + 4H+ + 4e- --> 2H2O Ag --> Ag+ + e- 2H2O --> O2 + 4H+ + 4e- F2 + 2e- --> 2F- Reactions at Electrodes during Electrolysis Answer the following questions by selecting the appropriate half-reaction. Assume that in each case the experiment...
Write balanced half-reactions for the following redox reaction:? 2CO2(aq)+2NO2(g)+2H2O(l)=====>C2O42-(aq)+2NO3(aq)+4H+(aq)
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential O2 (g) + 4H+ (aq) +4e− → 2H2O (l) =E0red+1.23V Zn+2 (aq) +2e− → Zn (s) =E0red−0.763V Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is...
the following first order reaction has a half life of 22.5 minutes. 2H2O2(aq) 2H2O(l) + O2(g) a. calculate the rate constant for this reaction. b. if the initial concentraition of H2O2 is 0.30M, calculate the amout of H2O2 that reamains after 45 min.
At 69.0 ∘C , what is the maximum value of the reaction quotient, Q, needed to produce a non-negative E value for the reaction SO42−(aq)+4H+(aq)+2Br−(aq)⇌Br2(aq)+SO2(g)+2H2O(l) In other words, what is Q when E=0 at this temperature? Express your answer numerically to two significant figures.
Standard Electrode Potentials at 25?C Reduction Half-Reaction E?(V) F2(g)+2e? ?2F?(aq) 2.87 Au3+(aq)+3e? ?Au(s) 1.50 Cl2(g)+2e? ?2Cl?(aq) 1.36 O2(g)+4H+(aq)+4e? ?2H2O(l) 1.23 Br2(l)+2e? ?2Br?(aq) 1.09 NO3?(aq)+4H+(aq)+3e? ?NO(g)+2H2O(l) 0.96 Ag+(aq)+e? ?Ag(s) 0.80 I2(s)+2e? ?2I?(aq) 0.54 Cu2+(aq)+2e? ?Cu(s) 0.16 2H+(aq)+2e? ?H2(g) 0 Cr3+(aq)+3e? ?Cr(s) -0.73 2H2O(l)+2e? ?H2(g)+2OH?(aq) -0.83 Mn2+(aq)+2e? ?Mn(s) -1.18 How can the table be used to predict whether or not a metal will dissolve in HCl? In HNO3? Drag the terms on the left to the appropriate blanks on the right to...
Eqation: 2I^-(aq) + 2NO2^-(aq) + 4H^+(aq) ---> I2(aq) + 2NO(aq) + 2H2O(l) 1. MI*V1 - M2*V2 V2 - 10ml VI = 2ml 4.5. 2 - M2 * 10 M2 - 0.9mM 2. Ksp - [Pb 2+][-]^2 Ksp - 1.401008 1.4*10^-8 - [Pb 2+1 (1.1 10.47 2 [Pb 2+] - 1.16M 3. Examine Eq. 3, above. Is this a redox reaction? If so, which element is being oxidized? Which element is being reduced? Explain your answer(s) by using the appropriate oxidation...
Hydrazine, N2H4N2H4, reacts with oxygen to form nitrogen gas and water. N2H4(aq)+O2(g)⟶N2(g)+2H2O(l)N2H4(aq)+O2(g)⟶N2(g)+2H2O(l) If 2.55 g2.55 g of N2H4N2H4 reacts with excess oxygen and produces 0.550 L0.550 L of N2N2, at 295 K295 K and 1.00 atm,1.00 atm, what is the percent yield of the reaction?
Hydrazine, N2H4N2H4, reacts with oxygen to form nitrogen gas and water. N2H4(aq)+O2(g)⟶N2(g)+2H2O(l)N2H4(aq)+O2(g)⟶N2(g)+2H2O(l) If 2.05 g2.05 g of N2H4N2H4 reacts with excess oxygen and produces 0.650 L0.650 L of N2N2, at 295 K295 K and 1.00 atm,1.00 atm, what is the percent yield of the reaction?
Peroxodisulfate ion, S2O82–, decomposes in aqueous solution as follows: 2S2O82–(aq) + 2H2O(l) = 4SO42–(aq) + O2(g) + 4H+(aq) When the solution is buffered at pH = 1.00, the rate obeys the following rate law: Rate = – = k[S2O82–] /delta t = k[ S2O82-] Under this condition, it was found that it took 330 s for the concentration of S2O82- to decrease from 0.100 M to 0.072 M. (a) Calculate the rate constant k and indicate the appropriate unit for...