Relationship between Volume and Number of Moles (Avogadro\'s Law) This is referr

Question

Relationship between Volume and Number of Moles (Avogadro's Law)

This is referring to an experiment where HCL reacts with magnesium to produce hydrogen. If I need to add more details please let me know.

What happens if there are visible pieces of solid magnesium present after the reaction has finished? How would this affect your results?

I'm no sure if I'm right, but if would try to answer it. I don't know what would happen if pieces would still be present, but I think it would affect my results because the number of moles of magnesium wouldn't correspond with the amount of H2. I don't know what else... can someone help me out and explain this to me please.

Explanation / Answer

If Mg is present after the reaction then HCL is the limiting reagant means HCL is all used up but still Mg is left behind. Reaction is Mg + 2HCL -> MgCl2 + H2 So 2 moles of HCl produces one mole of H2 so calculate accordingly the number of moles of HCl used to get how much moles of H2 is produced.

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