The theoretical yield of hydrogen gas if 5.00 mol of zinc are added to an excess of hydrochloric acid is 10.1 g H₂
The theoretical yield is the maximum possible mass of a product that can be made in a chemical reaction.
It can be calculated from: the balanced chemical equation. the mass and relative formula mass of the limiting reactant , and. the relative formula mass of the product.
The balanced chemical reaction is written as:
Zn(s) + 2HCl(aq) = ZnCl₂(aq) + H₂(g)
Given,
The amount of the reactant zinc to be used in the reaction which would be the starting point for the calculation.
It is as follows :
5.00 mol Zn ( 1 mol H₂ / 1 mol Zn ) (2.02 g H₂ / 1 mol H₂ )
= 10.1 g H₂
Hence, The theoretical yield of hydrogen gas if 5.00 mol of zinc are added to an excess of hydrochloric acid is 10.1 g H₂
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