1 a List the following metals in order of decreasing reactivity: alumin copper, iron, sodium. b Some magnesium powder was mixed with some copper(II) oxide and heated strongly. There was a vigorous reaction, producing a lot of sparks and a bright flash of light. i State the names of the products of the reaction. i Write a balanced symbol equation for the reaction. ili Explain which substance in the reaction has been reduced. iv Explain which substance is the oxidising agent.
1 a List the following metals in order of decreasing reactivity: alumin copper, iron, sodium. b Some magnesium powder was mixed with some copper(II) oxide and heated strongly. There was a vigorous reaction, producing a lot of sparks and a bright flash of light. i State the names of the products of the reaction. i Write a balanced symbol equation for the reaction. ili Explain which substance in the reaction has been reduced. iv Explain which substance is the oxidising agent.
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 25P
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Transcribed Image Text:effectively.
Galvanising is a combination of a barrier method and sacrificial protection.
Underground pipelines are also protected using sacrificial anodes. In this case,
lumps of magnesium are attached at intervals along the pipe. The very reive
magnesium corrodes in preference to the iron. The electrons producer e
magnesium forms its ions prevent the ionisation of the iron.
1 a List the following metals in order of decreasing reactivity: alumi
copper, iron, sodium.
b Some magnesium powder was mixed with some copper(II) oxide and
heated strongly. There was a vigorous reaction, producing a lot of sparks
and a bright flash of light.
i State the names of the products of the reaction.
il Write a balanced symbol equation for the reaction.
iiExplain which substance in the reaction has been reduced.
iv Explain which substance is the oxidising agent.
llewing
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