Calculate the mass of zinc required to obtain zinc chloride in an amount of 2 mol by reacting
| September 26, 2021 | education
Calculate the mass of zinc required to obtain zinc chloride in an amount of 2 mol by reacting it with an excess of hydrochloric acid.
The equation for the reaction of zinc with hydrochloric acid:
Zn + 2 H Cl = Zn Cl2 + H2.
It can be seen from the reaction equation that from 1 mole of zinc, 1 mole of zinc chloride is obtained. Thus, to obtain 2 mol of zinc chloride, provided there is an excess of hydrochloric acid, 2 mol of zinc are required.
The molar mass of zinc: M (Zn) = 65 g / mol, which corresponds to the mass of zinc: 2 × 65 = 130 g.
Answer: the mass of zinc is 130 g.
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