Answer to Question #144011 in General Chemistry for Javier

Question

How many milliliters of a 6.00 M HCl solution are required to react with 21.0 g magnesium?

Answer 1

n(Mg) = m/M = 21g / 24 g/mol = 0.875 mol

Mg + 2HCl = MgCl₂ + H₂

n(HCl)=2n(Mg)=0.875*2=1.75 mol

V=n/c=1.75 mol / 6 mol/L = 0.292 L = 292 mL

V(HCl solution) = 292 mL