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A student is given 1.525 g of pure CuO. To recover the Cu present in the...

A student is given 1.525 g of pure CuO. To recover the Cu present in the compound, the dark powdery solid was dissolved in 15.0 mL of 6M HCl, the solution diluted with 50.0 mL of water, and 0.40 g of Mg was added. Was this enough Mg to displace all the Cu2+ ions from the solution?

This is not enough Mg to diplace all the Cu2+ ions from the solution.


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a. If there is not enough Mg present, how much more Mg metal would be needed (minimum)?

You would need 0.032 mol( 0.078g) more of Mg to diplace all the Cu2+ ions.


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b. If there was enough Mg to displace the Cu, how much 6 M HCl (in mL) would be required to decompose the excess Mg present?

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