I’m the reaction mg (s)+2hcl(aq), how many moles of hydrogen gas will be produced from 75.0 millimeters of a 1.0m hcl is an excess of mg?

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07-06-2018
Chemistry

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I’m the reaction mg (s)+2hcl(aq), how many moles of hydrogen gas will be produced from 75.0 millimeters of a 1.0m hcl is an excess of mg?

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mkryukova19 mkryukova19 · Answer 1 · 2018-06-07T08:47:57+02:00

75.0 ml = 0.0750 L of the solution of a 1.0M HCl
0.0750L*1.0 mol/L = 0.075 mol HCl in 0.0750 L of the solution of a 1.0M HCl

Mg +2HCl ------> MgCl2 +H2
from reaction 2 mol 1 mol
0.075 mol x mol

x=0.075*1/2 = 0.0375 mol H2