or Questions 11-16: Balance the following oxidation-reduction reaction in acidic conditions using the half reaction method by following the step described in each question. ??2?−27(??)+???2(??)⟶??+3(??)+??−3(??)Cr2O7−2(aq)+HNO2(aq)⟶Cr+3(aq)+NO3−(aq) Step 5: Make the number of electrons in each half reaction equal by finding the multiplying factor for each half reaction {Cr2O7-2(aq) + 14H+ (aq) +6e- ⟶⟶ 2Cr+3(aq) + 7 H2O (l) } x                           ["", "", "", ""]              {HNO2(aq) + H2O (l) + ⟶⟶ NO3-(aq) + 3H+ (aq) + 2e- } x

Indicate oxidizing and reducing agents for the reactions represented by the following line notation: a) Pt(s)|H2(g)|H+(aq)||Cu2+(aq)|Cu(s) b) Ni(s)|Ni2+(aq)||Pb2+(aq)|Pb(s)

When the redox reaction Mn²+ (aq) reaction below H+ H* (aq) is + Bi03 →>>> (aq) Bi3+ is MnO4 (a Mn²+ (aq) is (aq) +_Mn²+, (aq) +_BiO3(aq) → _MnO4 (aq) +. What are the lowest whole number coefficients that would balance the reaction? Bi³+ (aq) H2O is + Bi³+, is balanced it turns into the (aq) BiO3(aq) is (aq) +_H₂0 (1) MnO4-

Identify the spectator ions in the following balanced molecular equation:                         KBr (aq) + AgNO3 (aq) → AgBr (s) + KNO3 (aq)

balance the following redox reaction if it occurs in basic solution. what are the coefficients in front of CLO2 and H2O in the balanced reaction? H2O2(1) + ClO2 (aq) --> ClO2- (aq) + O2(g)

Write balanced half-reactions for the following redox reaction: 51,(s)+2 Mn (aq)+8 H,O(1) 101 (aq)+2 Mno,(aq)+16 H"(aq) reduction: U oxidation: L| e

Complete and balance the following redox reaction in basic solution 2- 3c₂²- 1 + 2 (s) H* CIO₂(g) →CIO₂ (aq) + CIO3(aq) 3 4 H₂O Reset ( (1) LO 5 OH- H 6 (g) H3O+ 7 8 CI • x H₂O 9 (aq) S

For Questions 11-16: Balance the following oxidation-reduction reaction in acidic conditions using the half reaction method by following the step described in each question. ??2?−27(??)+???2(??)⟶??+3(??)+??−3(??)Cr2O7−2(aq)+HNO2(aq)⟶Cr+3(aq)+NO3−(aq) Step 1: Assign the oxidation states of each ATOM in the reaction before and after the reaction takes place. Reactants: Cr =                           ["", "", "", "", "", "", "", "", "", "", "", "", "", "", ""]                             O =                           ["", "", "", "", "", "", "", "", "", "", "", "", "", "", ""]            H =                           ["", "", "", "", "", "", "", "", "", "", "", "", "", "", ""]                               N =                           ["", "", "", "", "", "", "", "", "", "", "", "", "", "", ""]            Products: Cr =                           ["", "", "", "", "", "", "", "", "", "", "", "", "", "", ""]                             O =                           ["", "", "", "", "", "",…

Which reaction(s) can be identified as a redox reaction? CuO(s) + H₂SO4(aq) → CuSO4(aq) + H₂O(1) Cu(NO3)2(aq) + 2NaOH(aq) -> A →→ Cu(OH)₂(s) + 2NaNO3(aq) Cu(OH)2(s) CuO(s) + H₂O(g) CuSO4(aq) +Zn(s) → ZnSO4(aq) + Cu(s) Cu(s)+ 4HNO3(aq) - Cu(NO3)2(aq) + 2NO₂(aq) + 2H₂O(1)

Sodium oxalate, Na2C2O4Na2C2O4, in solution is oxidized to CO2(g)CO2(g) by MnO−4MnO4− which is reduced to Mn2+Mn2+. A 50.3 −mL−mL volume of a solution of MnO−4MnO4− is required to titrate a 0.342 −g−g sample of sodium oxalate. This solution of MnO−4MnO4− is then used to analyze uranium-containing samples. A 4.60 −g−g sample of a uranium-containing material requires 33.0 mLmL of the solution for titration. The oxidation of the uranium can be represented by the change UO2+→UO2+2UO2+→UO22+.     Part A Calculate the percentage of uranium in the sample.