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How might the following errors affect the concentration of the standard 0.0600 M solution?    Weighing...

How might the following errors affect the concentration of the standard 0.0600 M solution?

  

Weighing - out 1.2 g of CuCl2 anhydrous instead of 1.2 g of CuCl2 •2H2O.

Over - diluting the stock solution.

Not all of the CuCl2 dissolved in the stock solution.

1.

Increases the concentration.

2.

Decreases the concentration.

3.

Concentration is not affected.

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