Question

[References] Balance each of the following oxidation-reduction reactions by using the oxidation states method. (Use the lowest possible coefficients for all reactions.) C.110(9) + 02(9) — CO2(g) + H2O(g) E K(s) + HCl(aq) — K+ (aq) + CI+ (aq) + H2(g) Col+ (aq) + Ni(s) - Co2+ (aq) + Ni2+ (aq) Mg(s) + H2SO4 (aq) MgSO4(aq) + H2(g) 0 Submit Answer Try Another Version 5 item attempts remaining

Answer 1

a) Cymrugt 02 (g) Co, (g) + tho cgg. we balance carbon so an RMS we take 4 to this make carbon balance Now we balance H by writing 5 ano an RMS Now only oxigen remain so we take have 18 o on Rus. So we take ? O an kns. Cumio + 13 e 4 com +8 ho maltiply by 2 whale equation to make whale no. E 1 2 Calliot 13% 800,+ 1040 b) Klölt Hellog) - kt tag) + ccaqst Megy firstly we balance in so we take a nice an uns. thake ce unbalanced we take 2 a an Rus to balance charge we have to take 2 kt So an LAS 2K. 1 2 K (8) + 240 caq) → 2 kt tagit 20 caqat 4 (9) Scanned with CamScanner

& Co 3 egght Nico) colt (aq) + Alicaa) We have to balance charge on both side We take 2 cost an uns so 8 200 2t on RHS that make charge as well as equation balanced. (2003t caq) + Nics) 2007 Caq? + Nizhcaal d) We side So mg(s) + calculate and is a 4 sou caq) mg soy (aq) + the (9) the number of element on each find it is equal on both sides balanced equation in itself thy soy (aq) mg csou) caql+ 429) | mgls) +