Question

Question 40 (1 point) Consulting the table of standard reduction potentials provided, which species is the best oxidizing agent? 12 reaction Ered (V) Pb4+ + 2e → Pb2+ +1.67 Cd2+ + 2e Cd -0.40 OCd O Pb2+ OP64+ O ca²+

Answer 1

this is the example of a reaction for question 40 to understand the reducing and oxidizing agent.the main solutin of the question is below this example

Oxidation Zn + 2+ Cu スカル + Reducing Oxidising agent agent Oxidized product Cu Reduced product Reduction Oxidation is the loss of electrons. Reduction is the gain of electrons.

O Consulting the table of the standard veeduction potential provided, which species is the best oxidizing agent! Pbut +2e- Pb 2+ red +1.67 v ed Here c d 2+ + 2e = Erreda -0.40 V Reduction potential rolece ke means, this species have tendency loss of elections. So, and produce cation. Cd2+ is a good reducing agent. Reduction potential value the meary, this species have tendency to Accept electrons and peeractice that means there reduction reaction oreur. so, pod poht is a good onidizing agent. V is the best oni dizing agent. Pbut which balanced earwretim corresponds to tlu formatim vreaction for Conbon monoxide gas. I su C(s) + + 0,(9) -> co (9)

③ which base is the strongest ? В А к з 1+8 хоч РКь э — Xog К. Рк, 2 - los (1-ex tо-ч) = 3 14 2 Вак в РК, 23:45 Base с Кь з 1-4Х10-s Pь • - log ( 1-чхто") = 485 Based Рk 2 6. 23 smaller pkb - stronger bare So, smaller Kb - weaker ban Bare .B has the smallest Pky valeu. So, Base B in the strongest base бак, В екЬ 23.45. (т 4Еe (s) + o, C9) — 2° CS) Да”. дн° -ТДs" Дн° 2- с 29. 9 41 [mok д°, 541. 44 Тk-I at 298k. 2 2 - ca9.01 mol 25% к * (- 54-44) 3 629.9 х (ooo 1 mol + 29eyx 47.44 2 - Acc1c2. 78 ] mol - - 4с. 1288 Jт kJ/mol