The volume of hydrogen liberated at STP by treating of Mg with excess HCl is . [Molar volume=22.4 L at STP; ]

Question

The volume of hydrogen liberated at STP by treating  of Mg with excess HCl is  . [Molar volume=22.4 L at STP; ]

Canvas Classes · Accepted Answer

Strategy:
 Use the stoichiometry of the reaction between Magnesium and Hydrochloric acid to relate the mass of Magnesium to the moles of Hydrogen gas produced. Then, apply the molar volume at STP.

Step 1: Write the balanced equation

mole of  produces  mole of .

Step 2: Calculate moles of Magnesium

Step 3: Calculate volume of Hydrogen at STP
Volume .
In terms of :

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