What mass of iron will dissolve in 15 g of hydrochloric acid?

univerkov | December 9, 2020 | education

Fe + 2HCl = FeCl2 + H2
n (HCl) = m (HCl) / M (HCl)
M (HCl) = 1 + 35.5 = 36.5 (g / mol)
n (HCl) = 15 / 36.5 = 0.41 (mol)
n (Fe) = n (HCl) / 2 = 0.41 / 2 = 0.205 (mol)
m (Fe) = M (Fe) * n (Fe)
M (Fe) = 56 (g / mol)
m (Fe) = 56 * 0.205 = 11.48 (g)

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