ANS-A
reducing agent is an element or compound that loses an electron to
another chemical species in a redox chemical
reaction
You have 45 minutes. Question 3 5 pts For the following equation: MnO4 (aq) + SO4?...
Question 5 (1 point) Given: MnO4 (aq) + H+(aq) + Cl (aq) --> Mn2+(aq) + Cl2(g) + H2O(1) If the coefficient of MnO4 in the balanced equation is 2, what are the coefficients of H+, Cl- and Cl2, respectively? 8,5,5 0 16, 10,5 010, 10,5 o 4, 8, 4 08, 10,5
Question 31 4 pts 31. Determine which is reduced agent? MnO4 (aq) +5Fe2(aq) + 8 H(aq) 5 Fe(aq) + Mn2 (aq) + 4H2O(1) Mn in MnO4- H: Fe3+ Fe2+ Question 30 30. Calculate pH of 0.100 M HNO2(aq). K-2.8 x 10-5 9.01 6.21 2.78 5.21
Question 6 6 pts (Q4) What is the stoichiometric coefficient of MnO4 (aq) when the following equation is balanced in acidic condition? MnO4" (aq) + Fe (s) → Mn2+ (aq) + Fe 3+ (aq) 1 5 3 24 12
Question 5 4 pts 5. Write an equation to show how Fe2(SO4)3 correctly splits apart into its IONS Fe2(SO4)3-> 3 Fe2+2 50,3 b. Fe2(SO4)3-> 2Fe+3 +3504? Fe (50s);-> 2Fe +352-0,1 d. Fe2(SO4)3-> 2Fe+9+352 . 1202 Fe2(SO4)3->2Fe +350 D Question 1 4 pts 1. Which molecule has polar bonds but is NOT a polar molecule? Please note: lone pairs have been omitted on surrounding atoms, but ARE shown on each central atom. H-O: O-C-0 O-CAS
please show all work neatly
5. (2 pts) Consider the following acids and their dissociation constants HPO4-2(aq) + H2O.. H3O"(aq) + PO4-3(aq) Ka-2.2x 10.13 HCOOH(aq) H20 H3O (a) HCOO (aq) Ka = 1.8x10-4 a. Which is the weaker acid, HPO42 or HCOOH? b. What is the conjugate base of, HPO42 or c. Which acid has the weaker conjugate base? d. Which acid produces more ions? 6. (2 pts) Write a balanced equation for the neutralization of H3PO4(aq) and NaOH(aq) (3...
please solve A to d to get thumps up.
Question 11 5 pts Consider a galvanic cell consisting of the following two redox couples: Sn2+ (aq, 0.010 M) + 2e --> Sn (s) E.-0.14 V Cst (aq, 0.010 M) + e --> Cs(s) E--2.92 V a. Write the equation for the half-reaction at the cathode Question 12 5 pts b. Write the equation for the half-reaction at the anode HTML Editor Question 13 6 pts c. Write a shorthand cell...
please solve both questions to get thumps up.
Experiment Electrochemistry
Question 7 3 pts to determine the For the preceding cell, use the table linked here standard cell potential. 0.92 0.85 Sn2 STANDARD REDUCTION POTENTIALS IN AQUEOUS SOLUTION AT 25°C Half-reaction E"(V) Fe) +2 2F" 2.87 Co + Co2 1.82 Au! +36 Au(s) CI,($)+2 2 CI 0,()+ 4H+ + 4e 2 H,O(1) 1.23 Bry(I)+ 2e 2 Br 2 Hg2+ + 2 Hg2+ Hg2+ + 2 Hg(1) Age + Ag(s) 0.80...
CHEM 1411. Review Exercises for Chapter 3, 7, 8. F19 1. Give the number of lone pairs around the central atom and the geometry of the ion CIO2 A) 0 lone pairs, linear 1 lone pair, bent B) C) 2 lone pairs, bent D) 3 lone pairs, bent E) 3 lone pairs, linear 2. Predict the geometry and polarity of the CS2 molecule. A) linear, polar B) linear, nonpolar C) tetrahedral, nonpolar D) bent, nonpolar E) bent, polar 3. Which...
Information from the appendix is attached:
5. (20 pts) Consider the following reaction OF2(g) + H2O(g) ---> 2 HF(g) + O2(g) AH (kJ/mole) = -318 kJ/mole (a) Using this information along with data in the appendix of your textbook, calculate AH (OF, (g)) in kJ/mole at 25°C. (b) If 15.0 g of OF2(g) and 10.0 g of H2Og) react, how much heat, expressed in kJ is released? Hint: First calculate the limiting reagent. 6.(20 pts) Consider two Styrofoam coffee cups....
What is the general class of each test reaction in the introduction? Precipitation? Acid-Base? Oxidation eduction? anoina to aizy ona svidstils Reaction Class 1 2 iliw 15 TO15192do art sshommua bns nosgol rond dass 101 12575 gbubnium oY noi de lo enor Som 10 910 w II woy Xd on abian aningstid on naloga uzib 3 OOH 4 5 DHET 6 7 SET adus 00 9 Complex ion formation 10 11 No reaction 12 13 14 Combination 15 16 17...