Question

Mg + 2HCI(aq) --------------- H2(g) +MgCI2

Determine the number of mole of each product and reactant that would be needed or produced for each situation specified.

Mg given 2.0 moles

HCI given 0.5 moles

H2 given 4.2 moles

MgCI2

Answer 1

Mg given 2.0 moles: 4.0 mol HCl, 2.0 mol H₂, 2.0 mol MgCl₂

HCI given 0.5 moles: 0.25 mol Mg, 0.25 mol H₂, 0.25 mol MgCl₂

H₂ given 4.2 moles: 8.4 mol HCl, 4.2 mol H₂, 4.2 mol MgCl₂