Zinc metal and hydrochloric acid react according to the following equation: Zn_(s) + 2Hcl_(aq)= ZnCl_2(aq) + H_2(g)

Class: Form 3

Subject: Chemistry

Topic: Mole Concept

Lesson Summary

Zinc metal and hydrochloric acid react according to the following equation:
Zn_(s) + 2Hcl_(aq) = ZnCl_2(aq) + H_2(g)
1.96g of zinc metal were reacted with 100cm³ of 0.2m hydrochloric Acid.
a) Determine the reagent that was in excess.
b) Calculate the total volume of hydrogen gas that was liberated at S.T.P. Zn=65.4; molar gas volume = 22.4 litres at S.T.P.

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