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March 26, 2017

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Solution A, while in a 1.0 cm cell, has an absorbance of 0.390 and a [Cu2+] = 0.0283 M. Then, 6.57 mL of solution A is diluted with pure water to 100.0 mL. What is the absorbance of this diluted solution?

I tried but I still don't get it. Can anyone please help! :( Thanks!

  • chemistry - ,

    Solution A initial:
    Absorbance = kc
    Substitute A and c, calculate k.

    Diluted solution:
    new concn = 0.0283 x (6.57/100)
    Substitute k and new c, calculate Absorbance.

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