Mole Concept class assignment

Question

Mg+HCl→MgCl2+H2. (a) 2.46 moles of HCl will produce how many moles of H2.

Answer 1

You MUST balance the equation before working these problems.

 

Mg(s) + 2HCl(aq) ==> MgCl₂(aq) + H₂(g)

From this BALANCED equation, you can see that 2 moles HCl produces 1 moles H₂ gas.

Or, looked at another way, the moles of H₂ gas produced is 1/2 the moles of HCl used.

 

Can you now figure out how many moles of H₂ gas will be produced from 2.46 moles HCl?