Mn in MnO4- has oxidation state of +7
Mn in Mn+2 has oxidation state of +2
So, Mn in MnO4- is reduced to Mn+2
Fe in Fe has oxidation state of 0
Fe in Fe+2 has oxidation state of +2
So, Fe in Fe is oxidised to Fe+2
Reduction half cell:
MnO4- + 5e- --> Mn+2
Oxidation half cell:
Fe --> Fe+2 + 2e-
Balance number of electrons to be same in both half reactions
Reduction half cell:
2 MnO4- + 10e- --> 2 Mn+2
Oxidation half cell:
5 Fe --> 5 Fe+2 + 10e-
SO, 10 electrons are being transferred
Lets combine both the reactions.
2 MnO4- + 5 Fe --> 2 Mn+2 + 5 Fe+2
Balance Oxygen by adding water
2 MnO4- + 5 Fe --> 2 Mn+2 + 5 Fe+2 + 8 H2O
Balance Hydrogen by adding H+
2 MnO4- + 5 Fe + 16 H+ --> 2 Mn+2 + 5 Fe+2 + 8 H2O
This is balanced chemical equation in acidic medium
Answer:
2
5
16
5
2
8
10
C2 T13HW Question 3 Homework - Unanswered Fill in the Blanks Balance the following redox reaction...
C2 T13HW Question 3 Homework Unanswered Fill in the Blanks Balance the following redox reaction and then fill in the blanks below: MnO (aq)+-Fe (s) + _H*(aq) - _Fe2 (aq) +Mn2 (aq) + _H2O (l) The coefficient in front of MnO (aq) is The coefficient in front of Fe(s) is The coefficient in front of H (aq) is The coefficient in front of Fe2 (aq) is The coefficient in front of Mn2 (aq) is The coefficient in front of H2O(aq)...
C2 T13HW Question 2 Homework - Unanswered Fill in the Blanks Consider the unbalanced chemical reaction shown below: _Cu[s] + _HNO3(aq) + Cu(NO3)2(aq) +_NO(g) + _H2O(L) The oxidation state of Cu in Cus) The oxidation state of Cu in Cu(NO3)2(aq) = The oxidation state of Nin HNO3(aq) - The oxidation state of Nin NO 9) The total number of electrons transferred in this reaction is The sum of the coefficients in the balanced chemical reaction -
C2 T14HW Question 6 Homework • Unanswered Fill in the Blanks Consider the following redox reaction at 298K: 3Fe2+ (aq) + 2Cr(s) + 3Fe(s) + 2Cr3+ (aq) The total number of electrons transferred in this reaction = Eceu- AG°= kJ/mol (yes/no) Is the reaction spontaneous as written?
Fill in the Blanks Type your answers in all of the blanks and submit Balance the following redox reaction and then fill in the blanks below: _Pb(OH) +_CIO_PbO2 +_Cl" + LOH" + _H2O The coefficient in front of Pb(OH) is Type your answer here The coefficient in front of CLOis Type your answer here The coefficient in front of PbO, is Type your answer here The coefficient in front of Cl(aq) is Type your answer here The coefficient in front...
C2 T13HW Question 4 Homework. Unanswered What is the sum of the coefficients when the following redox reaction is properly balanced? H:0(1) + Br (aq) + AL Alls) + Broj (aq) + (aq) Numeric Answer:
C2 T13HW Question 5 Homework. Unanswered Consider the chemical reaction for the smelting of iron oxide to form solid iron shown below: Fe,O3(s) + 3CO(g) + 2Fe(s) + 3C02(9) Answer the questions below by matching each question (on the left) with its correct answer on the right), Premise Response Drag and drop to match What is the oxidation state of Fe2O3(s)? A 6 electrons 2 What is the oxidation state of Fe in Fels 3 is Fe oxidized or reduced...
Fill in the blanks with the appropriate numbers to balance the half reactions and the overall reactions. Note: H,O, OH", H,0 and e" (and CT") are repeated on both sides, obviously some will be 0. 1) MnO, + Cu - MnO, + Cu?" in acidic solution. MnO, + 2 H,0 + OH' + 3 e MnO, + OH,O + 4H+ Oc I Cu + OH,O + OH+ 0 0 - | Cu? + OH,O + OH' + 20 3 Cu...
C2 T11HW Question 10 Homework. Unanswered Fill in the Blanks The acid dissociation constant for a weak acid HX is 3.2x10-9 at 25°C. Calculate the standard free energy of formation for X (aq) at 25°C. The standard free energies of HX(aq) and H (aq) are -203.1 kJ/mol and 0, respectively. AG= kJ/mol Unanswered Submit Fullscreen .. C2 TL1HW Question 11 Hmk .Unanswered
C2 T14HW Question 17 Homework . Unanswered Fill in the Blanks How long would it take to plate 5.00 grams of iron if a current of 5.18 A is passed through an Fe(NO3)2 solution? time = hrs
C2 T13HW Question 15 - CHALLENGE HomeworkUnanswered Fill in the Blanks Antimony (Sb) is a chemical element that is often used to make alloys with lead and tin. The quantity of Sb in a sample can be determined by an oxidation-reduction titration using a sample of Sb ore as the analyte and an oxidizing agent as the titrant. Consider a reaction in which a 9.47 g sample of stibnite, an ore of Sb, is dissolved in hot, concentrated HCl(aqHCl(aq) and...