Question
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2 . 3 and 4 ..
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I, write chemical equations that represent the potential reactions of copper metal with the four metal ion solutions. Based on your observations, which ones occurred and which did 2. Galvanized steel, used in construction and infrastructure, consists of steel (mostly iron) coated with an outer layer of zinc metal. Based on your observations, bow does galvanizing steel protect the steel from pomosion? 3, Why is it not necessary to test the reactivity of the elemental metals with solutions of the same metal ion? To illustrate your explanation, write the equation for the potential chemical reaction using ane of the metals studied in this lab. 4. Some metals form crusty oxide layers that can flake off to expose clean metal surfaces to and air. metals fomm oxide layers that are durable and relatively non- permeable. Use this fact to explain why aluminum, a more active metal than iron, is less susceptible corrosion
Explanation / Answer
And 2 : Galvanising is a method of rust prevention. The iron or steel object is coated in a thin layer of zinc. This stops oxygen and water reaching the metal underneath - but the zinc also acts as a sacrificial metal. Zinc is more reactive than iron, so it oxidises in preference to the iron object.
