chemistry

posted by Anonymous

When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 4.8 M is required to react completely with 2.60 g of magnesium?

  1. bobpursley

    Balance the equation;

    2HCl + Mg>>>Mg(Cl)2 + H2

    so it takes two moles of HCL per mole of Mg.

    how many moles does one have in 2.60gMg
    ans: 2.60/atomicmassMg

    Now take twice of that for moles of acid.

    Molarityacid=molesacid/volume
    volume=molesacid/4.8

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