12g Mg (at. mass 24 ) react with a dilute mineral acid to produce maximum hydrogen equal to
Mg+2HCl→MgCl2+H2
Moles of Mg= Moles of H2
Moles of Mg=24/12=0.5mol
So, moles of H2=0.5mol
(a) Name one metal which reacts with dilute hydrochloric acid to produce hydrogen gas.
(b)Name one metal which does not react with dilute hydrochloric acid.
Correct the following statements :
(a) Hydrogen is used as a fuel for rocket propulsion.
(b) All metals react with acids to give hydrogen.
(c) Metals adsorb hydrogen.
(d) Very dilute nitric acid reacts with zinc to produce hydrogen.
(e) Conc.H2SO4 reacts with zinc to liberate hydrogen.