Question

C. "Pecking order of the halogens. Enter the color of the hexane layer in each box below. In addition, enter "REACTION" or "NO REACTION" in each case. HINT: Is the color of the hexane layer that of the reactant halogen (Cl, Br2 or la) or is it the color of the product halogen? solvent only NaCl(aq) + KBr(aq) + Kl(aq) + solvent solvent solvent Cl(aq) Br(aq) 1,(aq) For every combination in which there was a reaction, write the net ionic equation On the basis of these results, circle the best oxidizing agent Ch Br2 12 C Br F reducing agent: Ch Br 12 CH B E Rank each of the 6 species in this activity series. oxidizing agents: best reducing agents: worst

"Pecking order" of the halogens: Enter the color of the hexane layer in each box below. In addition, enter "REACTION" or "NO REACTION" in each case. HINT: Is the color of the hexane layer that of the reactant halogen (Cl2, Br2 or I2) or is it the color of the product halogen?

For every combination in which there was a reaction, write the net ionic equation:

Answer 1

solvent Nachart KBreaq) + only I solvent solvent KI (aq) + solvent Brz(1) 2laq) | Greenish I No yellow This is the I reaction color of cheat) No reaction B2 (aq) orange I No color 2 (5) will be will be formed. formed orange.color Violet color observed. No I (3) will be ren formed Violet color is observed No ren reaction Iron 2 (aq) violet color No No Net ionic equations for the reactions - ) Complete Balanced chemical equation :-(BCE) Cacaq) + 2 KBraq, 2 kc (aq) + Brz(1) 2) Complete ionic equation - (CIE) az (aq) + 2k Topy + 2Br (29) > 24 ou + 2 chap) + B8 (1) (3) Net ionic equation :- (NIE) Clas) + 2 Brjag) => 24mp + 5(1)

net ionic equation is obtained by cancelling the spectator ions in the complete ionic equation.
BCE 2) Chiant 2 KI (29) akelar) t Iz(3) CE- chcaq + 24 agost 2 I (aq) > 2 (apt 24 (ar) + 12 (3) NIE - claraq) + 2 I (aq) aclag) + I (3) 3) BCE :- Br2(aq) + 2K I (aq) → KB8aq) + 12 (3) CIE: BY(09) + 2x tapyt 25 (29) ► 2x*apst 25tagt 1260) NIE B%2(aq) + 2 I (aq) 2 B8 (aq) + 1 (s) * Best oxidising agent :-(el) Br ļ ci si i Best reducing agent :- Cl, Br, 1. o si☺

oxidising agents :- h > Br > I > ce > Br > I- best worst Reducing agents !- wort best cl < Br< I seec Br <I (-1) oxidation increase in oxidation no. o cl +2 B8 2018 + Brzo decrease in oxidation number (reduction) Chlorine is gaining electrons and there is a decrease in its oxidation number. Hence, in this reaction chlorine cl undergoes reduction So ch is an oxidising agent.

Bromide (Br) changes to Br. which loses electrons, so Br undergoes oxidation . Hence, Br- is the reducing agent. * Oxidising agent that itself undergoes. reduction and oxidises the other reactant with which it reacts. * Reducing agent oxidation and with which it that itself undergoes reduces the other reactant reacts.