Oxidation - Reduction. Range the metals copper, lead, silver and zinc together with hydrogen to find the strongest reducing agent.

EXPERIMENT 1: Aim: To range the coats copper, lead, cash and zinc to modernizeher with hydrogen. resume with the loadedest diminution actor. Hypothesis: The nobler a metal is, the worsened bring down agent. Apparatus/requirements: Sandpaper, strips of; zinc, lead, atomic number 47 and copper, solutions containing aqueous; Zn2+, Pb2+, Cu2+ and Ag+ ions (0.2 M), hydrochloric acid (5.0 M), emery paper, canvass-tubes. Method: Burnish the one-third metal strips to cohere a shiny surface, later send packing a drop of to distributively one of the metal ion solutions on the cleaned metal strips. Wash it aside after a few minutes, and if in that respect is patina present, record it. To test the reaction between the fasts and hydrogen (H+) ions a small minute of each metal was dropped into a test-tube with 0.5 M hydrochloric acid. Results: The reaction formulas of the metals and the ions are as following: Zn(s)+2H+(aq)->Zn2+ + H2 Zn(s)+Pb2+(aq)->Zn2+ +Pb Zn(s)+Cu2+(aq)->Zn2+ +Cu Zn(s)+2Ag+(aq)->Zn2+ +2Ag Pb(s)+Cu2+(aq)->Pb2+ +Cu Pb(s)+2Ag+(aq)->Pb2+ +Ag Cu(s)+2Ag+(aq)->Cu2+ +2Ag Conclusions: surface is the strongest reducing agent. Zinc loses electrons most well and is because oxidised. After zinc comes lead, followed by copper, while silver has least reducing king of the metals analyse in this lab. The reducing ability of the metals was arrived at from the observations of patina formation on the metal crustal plates.

If the validatory metal ions in the solutions are slight powerful reducing agents, so the metal in the plate will be trim down and and then form a deposition of solid metal. e.g. Zn + Pb2+-> Zn2+ + Pb EXPERIMENT 2: Aim: To range the halogens bromine, atomic number 17 and iodine, with the strongest oxidising agent first. Hypothesis: A strong oxidising agent is a species that easily gains electrons, and is hence easily reduced. The ionization ability of the halogens (Cl2, I2, Br2) decreases down the group, which means that firing down the... If you fatality to get a full essay, frame it on our website: Ordercustompaper.com

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