One reaction that produces hydrogen gas can represented by the following unbalanced chemical equation: #Mg(s) + HCl(aq) -> MgCl_2(aq) + H_2(g)#. What mass of HCl is consumed by the reaction of 2.50 moles of magnesium?

1 Answer
Apr 22, 2017

Answer:

Well we need the stoichiometric equation..............and calculate that #182.3*g# of #HCl# are evolved..............

Explanation:

#Mg(s) + 2HCl(aq) rarr MgCl_2(aq) + H_2(g)uarr#

And, given #2.5*mol# metal (and stoichiometric acid), CLEARLY, there are #5.0*mol# #HCl# consumed.........

And thus mass of #HCl=5.0*molxx36.46*g=182.3*g#.