Zinc Reaction With Strong And Weak Acid
by Science Photo Library
Title
Zinc Reaction With Strong And Weak Acid
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Zinc reaction with a weak (left) and a strong acid compared. In the weak acid, few bubbles of hydrogen are seen. This is because metallic zinc in air reacts with atmospheric carbon dioxide to form a passivating layer of zinc carbonate which is resistant to weak acids. Strong acids are able to dissolve the passivating layer, so the reaction is more vigorous. The reaction of zinc in acid is given by the equation Zn (s) + 2H+ (aq) = Zn2+ (aq) + H2 (g).
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October 7th, 2018
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