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In order to prepare for a lab I need to figure out how to dilute a $.05M$ solution of Cu$^{2+}$ to $.00005M$ using the given equipment:

2 x 2.00mL graduated pipette
2 x 50.00mL volumetric flask

"You will need to dilute the .05M solution using both volumetric flasks and serial dilutions to obtain the .00005M solution."

I'm having difficulty finding a procedure to produce the desired concentration.

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closed as off-topic by Loong, ron, Klaus Warzecha, Geoff Hutchison, Philipp Mar 5 '15 at 23:05

This question appears to be off-topic. The users who voted to close gave this specific reason:

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up vote 1 down vote accepted
  1. Use the formula $c_1V_1 = c_2V_2$

  2. Take 2.00 ml of 0.05 M solution using pipette and make to mark in 50.00 ml volumetric flask. Final concentration = 0.002 M

  3. Take 1.25 ml of this 0.002 M solution using pipette and make to mark in 50.00 ml volumetric flask. Final concentration = 0.00005 M

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1  
for questions tagged homework, you should only provide the approach to the answer, but not the complete answer. – Ben Norris Nov 28 '12 at 11:25
    
I didn't realize I could obtain less than 2.00mL using the pipette. I guess that's why it's "graduated". I was thinking way too hard. Thanks – Chris A Nov 28 '12 at 17:00

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