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Demonstrations › yellowcomic.comical Reactions II › 5.2

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yellowcomic.comical reaction II: Oxidation/Reduction

5.2 Oxidation that Zinc by Hydrochloric Acid

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Subjects: Oxidation/reduction, gas creating reaction, acid properties, network ionic equations, exothermic reactions.

You are watching: Zinc and hydrochloric acid net ionic equation

Description: monitoring of the oxidation the zinc metal by hydrochloric acid to form hydrogen gas and also zinc chloride.

Materials:

Mossy zinc (1 piece) 1 M Hydrochloric acid, HCl‡ Petri dish Tweezers Flask (optional) Balloons (optional)

‡HCl is situated in the room under the hood.

Procedure A: Note: use the demo camera for displaying the reaction in ISB135.

add a little amount of HCl come the Petri dish or flask. include a small piece that zinc metal to the HCl and also observe the reaction. Hydrogen gas will certainly be produced.

Optional: placed a balloon over the flask opening to collect the gas. Ignite the balloon.

Discussion: Zinc is oxidized through hydrochloric mountain to form zinc chloride. In the process, hydrogen gas is produced. The reaction is given below.

Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)

Zn(s) + 2H+ → Zn2+(aq) + H2(g)(Net ionic equation)

Safety: HCl and also zinc chloride room corrosive and also can reason skin irritations or burns. Wear ideal protective equipment, consisting of gloves and safety glasses.

Disposal: remedies of zinc chloride have to be disposed in ideal hazardous rubbish container.

See more: How To Calculate 33 1/3 Percent Means One Third, What Is 33 1/3% As A Fraction And Decimal

References: for a an ext thorough description and also variations see:

1. B.Z. Shakhashiri; yellowcomic.comical Demonstrations: A Handbook because that Teachers the yellowcomic.comistry; Wisconsin; 1985; Volume 1; p. 25-26.

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