Calculate the mass of zinc that can dissolve in hydrochloric acid weighing 36.5 g

1. We compose the reaction equation:

Zn + 2 HCl = ZnCl2 + H2

According to the equation: zinc – 1 mol, and HCl – 2 mol. We find their masses:

m (Zn) = n * M = 1mol * 65g / mol = 65g

m (HCl) = n * M = 2 mol * (1 + 35.5) = 73 g

2. Calculate the mass of zinc:

x g Zn – 36.5 g HCl

65 g Zn – 73 g HCl

Hence, x = 65 * 36.5 / 73 = 32.5 g.