Question

Decide ▼ er each chemical reaction in the table below is an oxidation-reduction ("redox") reaction. If the reaction i redox reaction, write down the formula of the reducing agent and the formula of the oxidizing agent. redox reaction? reducing agent: alo oxidizing □ agent: Ar redox reaction? yes no 2Ag NO,(aq) + Cua2(aq) → 2AgCI () + Cu(NO),(aq) r tering agent: oxidizing agent: redox reaction? s,(s) + 4Pb(s)-→ 4PbS2(s) reducing □ agent: oxidizing agent:

Answer 1

+5 2 N2 is getting oxidized (increase in oxidation number, from 0 to +5) Oxygen is getting reduced (decrease in oxidation number, from 0 to -2) # So, it's a redox reaction. YES # Oxidizing reagent-02 (the chemical species getting reduced is called an oxiding agent) # Reduing agent = N2 (the chemical species getting oxidized is called a reducing agent) +1 -1 +2-1 It it NOT a redox reaction because the oxidation number of all chemical species remains the same on either side of the reaction +2 -1 4PbS, (s) # It's a redox reaction. YES # Oxidizing reagent 38 (the chemical species getting reduced is called an oxiding agent) # Reduing agent-Pb (the chemical species getting oxidized is called a reducing agent)