Question

How many moles of hydrogen gas can be evolved from the action of excess hydrochloric acid on a mass of 4.8⋅g of magnesium metal?

Answer 1

Given Mg(s)+2HCl→MgCl2( aq)+H2(g)↑⏐ ....we gets. ... Moles of dihydrogen=PVRT ... 4⋅mmol×24.3⋅g⋅mol− 1=0.1⋅g of metal, a good mass for such an ...