Question

J. Muench Group Activity #10 CHEM 162 1. Balance the following redox reactions that occur in acidic solutions. a. Asis) + SO4 (aq) → AsO4 (aq) + SO218) b. Craq) + Bio-ag) → Cr20; aq) + Bilaq)

I just need some help on how to start off balancing the equations for both questions.

Answer 1

@ As (5). + sezonda — Aşou caz) + sques, In acidic solum, oxidation half; . As (3) -→ Ascona balancing the no. of oxygen both side 410. + As (3) - Asos com balancing the no. of hydrogen both side 41H0+ As As 0,3 - + 8Ht as the reaction occurs in acidic solun. balancing the charge both side 4140 + As — As@+8H+ + sé 1. Reduction half: sian) - 50 (9) balancing the no. of onggen: both side 50,2- soz + 2130 balancing the no. of hydrogen both side 4H+ + sor so +2HO.

O balancing the charge both side ::. 4H++ so + 2e → söz + 240 Addition of cuidation Rreduetion half: . [As + 410 - As Que? +8H+ + se]*2 [50,274H+ +2e - So_72456] X5 2A5+ 8140 + 550,27 20:4+ 2A50,3 +1647 .+5502 +10 150 ZAS + 550,274H+ = 2450,2 7 559 +2430 ® ons tas) + BsQzers Croza) + Bratis) 2 In acidic solum , . N.Be The given poxidation helf: I question hers a en 37 balancing the no. of on atoms Bi3t is correct instead of Bilt : 2003 c2207² - printing mistake

SA 2 t balancing the no. of oxygen atoms. 1740 + 2003+ = 0,272 balancing the no. of hydrogen atoms... . 710+2 cm3t eno 2 + 14 H+ balancing the charge 7140 + 2003* => 672072714H+ + 6e o Reduction hoff: : Bio, But balancing no. of onjgen atoms Bio Bigt + 3150 balancing no. of hydrogen forms ... GH+ + Bio - Bigt + 340 balancing the cheage B1O3 +687 +2e -> B; 3+ + 340

Addition of oxidation of reduction half - 7H0 + 20034 - 6,0% +14+*+6e [B10,55 +6H*+2e → B737 +31607%3 | 740 + 2003*+ 3B10,' +18H+ +66 + ,072714H+ +361347 9160 +61 120m2++ 3 Bio + 4H+ + 2m2072 7 381342140 11 /