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planteatsman
planteatsman asked in Science & MathematicsChemistry · 1 decade ago

Chemistry Problem, Please Help?

Ok so I have a basic chemistry problem here. It has to do with moles.

"Determine the number of moles of chloride ions in 4.05 mol ZnCl2."

That's the problem. I'm usually pretty good with mole problems, but I'm stumped here. Any solutions?

Thanks.

Update:

Thanks to sacchit, who solved the problem. Now I know how to do these...thanks!

1 Answer

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  • sacchit
    1 decade ago
    Favorite Answer

    well, 1 MOLECULE of ZnCl2 contains 2 atoms of Chlorine, which become 2 ions of chlorine on ionisation, so 1 Mol ZnCl2 would contain 2 moles of chloride ions.

    1 M Zncl2 ------ > 1M Zn( 2+ ) + 2M Cl ( - )

    therefore 4.05 Moles of ZnCl2 would have 4.05 * 2 Moles of Chloride Ions = 8.10 Moles.

    Hope That Helps!

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