How many grams of sodium thiosulfate, Na2S₂O3.5H₂O (248 g/mol), constitute its gram equivalent weight as a reducing agent? O 124.0000 g O248.0000 g 32.0000 g 82.6667 g

. Choose the item that correctly describes the oxidizing agent and the reducing agent in the reaction shown. Bas(s) + 4H;O: (aq) → BaSO, (s) + 4H2O(1) S changes from oxldation number +2 to +4. The Bas is the reducing agent. Ochanges from oxidation number -1 to -2. The H;O; is the oxidizing agent. S changes from oxidation number -2 to +6. The Bas is the reducing agent. Ochanges from oxidation number -4 to -2. The H;O; is the oxidizing agent. S changes from oxidation number -2 to +6. The Bas is the reducing agent. O changes from oxidation number -1 to -2. The H20z is the oxidizing agent. S changes from oxldation number -2 to +6. The Bas is the oxidizing agent. O changes from oxidation number -1 to -2. The H20z is the reducing agent.

Identify the oxidant (oxidizing agent) and reductant (reducing agent) in the following reaction. Sn4+ + CI → Sn2+ + Cl2 O Oxidant: Cl2, Reductant: Sn2+ O Oxidant: Sn2+ Reductant: Cl2 O Oxidant: CI, Reductant: Sn4+ O Oxidant: Sn4+ Reductant: CI

Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox") reaction. If the reaction is a redox reaction, write down the formula of the reducing agent and the formula of the oxidizing agent. redox reaction? yes no () 70, (g) + 2CH,CH,( - 4co, (g) + 6H,0(g) reducing agent: oxidizing agent: redox reaction? yes no co,(g) + 2H,0(1) → H,0°(aq) + HCO, (aq) reducing agent: oxidizing agent: redox reaction? yes no Fe(s) + CuSo,(aq) Feso, (aq) + Cu (s) reducing agent: oxidizing agent:

In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent. name of the element oxidized: 3Ag + Cr³+→→→→Cr + 3Ag+ formula of the oxidizing agent: name of the element reduced: formula of the reducing agent:

Consider the following redox reaction: 3Ag+ (aq) + Al(s) → 3Ag (s) + A1³+ (aq) If this reaction starts with 2.50 g of Al and the enough amount of Ag+, how much of electric charge could be generated? 4.28 x 104 C 8.94 × 10³ C 2.68 × 104 C 6.25 × 10³ C O 1.67 x 104 C

Identify whether each of the following reaction is a redox reaction. If it is so, by showing the change in oxidation numbers identify the oxidizing agent and reducing agent. 4 CaSO3 ⟶ 3 CaSO4 + CaS 2 KMnO4+ 3 H2O2 → 2 MnO2 + 2 KOH + 2 H2O + 3 O2

A. Balance the following redox reactions using the half-reaction method. B. Identify the oxidizing agent and the reducing agent. 1. Zn(s) + Fe²+ (aq) → Zn²+ (aq) + Fe (s) 2+ Zn(s) → Zn² +2e- oxidiation haut reaction (aq) 2+ 20+ Fe (an) → Fe (5) Reducation haut reaction (94) - Bris) Reducing agent (S) Fe 2+ oxidizing agent 2. (Balance this reaction In Acidic Solution):

Why is this equation not a redox reaction? Fe2(SO4)3(aq) + 3H2O(l)

Consider the redox reaction 3 Ni² (aq) + 2 Co(s) → 2 Co³(aq) + 3 Ni(s) Which substance gets oxidized? Ni²+ Ni O Co³+ What is the oxidizing agent? Ni²+ Ni Co Which substance gets reduced? Ο Ni O Co³+ Co O Ni²+ What is the reducing agent? Co³+ Ni Co Ni²+