Question

could someone please answer and explain the questions please!!

#’s 7,8,9,13,14,17,18,19,20

please and thank you

What is the oxidation number for the underlined manganese (A)1 (B)2 (C)4(D)(E)7 When balancing the below half-reaction in 8. Which of the following is true concerning a 1. vanic cc A) Oxidation occurs at the cathode and is (B) Oxidation occurs at the anode and is where anions move towards 2. acidic sol electrons are added to ution, where anions move towards side of.the.cquation. where cations move towards Reduction occurs at the cathode and is where anions move towards Reduction occurs at the anode and is where anions move towards A), reactant (C) 10, reactant (8)5, product (D) 10, product (D (E) 3. The reducing agent in the below reaction is Fe(s)+Cu2(aq) (A) Fels) (C) Fe (aq) Fe (aq)+Cu(s) Ethanol, C H6O, is used in a fuel cell, for which the overall reaction is the combustion of ethanol. The anode half-reaction is: C,HoO(g)+3HO 2C02(g)+12H(aq)+12e What is the cathode half-celi reaction? 9. By Cu (o )Culs) What is the total number (n) of electrons transferred in the below reaction? (A) 02(g) + 4H'(aq) + 4e-→ 2H2O(1) (B) 2H(og)+2e Halg) (C) 2H20() + 2e-→ H2(g) + 2OH-(aq) (D) 02(g) 2H20()+4e40H(aq) (E) Olg) + 2H"(aq) + 2e* → H2O2(aq) 2C2H70 (g) → 4CO2(g) + 6H20(1) (A) 4 (B)7 (C) 12 (D) 14 (E) 28 what is Ecel for the below reaction? 10. What is the equilibrium constant for the below reaction at 25°c? (A).37V (B) 1.37V (C)-4.37 V 1.37V (E)-11.6 V Standard Reduction Potentials, V 6. If a galvanic cell is made of a standard +0.68 hydrogen electrode (SHE) and a silver clectrode, what is the overall cell reaction? (A) 1.5x107 (C) 2.7x10 (B) 6.7x103 (D) 3.6x10-19 8) H2lg)Ag(oq) H'(aq)+2Ag(s) (C) H'(aq)+Ag(s) Ha(g)+Ag(aq) (D) 2H(aq) 2Ag(s)H2lg)+2Ag (aq) (E) Hig) + 2Ag+(aq) → 2H.(aq) + 2Ag(s) . Which statement is true for a galvanic cell? 2. Which statement is true for an oxidation- . When a voltaic cell reaches equilibrium, reduction reaction if the cquilibrium constant K is less than 1? (A) It is spontaneous (B) It is nonspontaneous (C) AG is negative (D)E is positive (E) More than one of above which following will be zero? A) AG (D) K (8) AS (C) E Page 2