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Published byFrancisco Stein Modified about 1 year ago

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Using C1V1=C2V2

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What do all those things stand for? C1= concentration 1 V1= volume 1 C2= concentration 2 V2= volume 2

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So when do we use it? We need to make solutions from stock solutions. Example We need to make a 1x concentration of stain but it comes as a 10x concentration. We know we need 250 ml of the 1 x solution for the experiment.

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How do we figure it out? Fill in what we know: C1- 1ox V1-? C2- 1x V ml Now set it up 10(V1)=(1)(250ml)

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Now do the math! 10(V1)=(1)(250ml)

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Now do the math! 10(V1)=(1)(250ml) 10v 1 =250 ml 10

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Now do the math! 10(V1)=(1)(250ml) 10v 1 =250 ml 10 V1= 25 mL

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So now how do we make it… 1 st we need to figure out the difference between how much we want at the end and how much of our stock we are adding so… 250 ml- 25 ml= 225 ml (V2) (V1)

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The Steps Obtain 25 ml of Stock Solution and bring to volume by adding 225 ml of water.

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Partner Practice Problems

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