Ask Question
21 October, 01:35

Suppose you digested 0.25 g of a copper ore samplein 15 mL of solution. One mL of this solution is transferred to a 10 mL volumetric flask, which is filled to the calibration level. The resulting concentrationwas 0.0087M Cu2+. What is the concentration of copper in the ore sample in units of percentage?

+5
Answers (1)
  1. 21 October, 01:43
    0
    10 mL = 10⁻² L

    1 mL of solution contains. 0087 x 10⁻² mole of Cu

    15 mL of solution will contain. 1305 x 10⁻² mole of Cu

    .1305 x 10⁻² mole of copper =.1305 x 63.5 x 10⁻² gm of Cu

    =.08286 gm

    concentration of copper in the ore sample

    =.08286 x 100 /.25

    = 33 % approx.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Suppose you digested 0.25 g of a copper ore samplein 15 mL of solution. One mL of this solution is transferred to a 10 mL volumetric flask, ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers