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Chemistry

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1. I have 2% NaCl solution. From this I want to prepare a solution to contain 0.1 g of the sodium compound in 2 mL of water.

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  • Chemistry - ,

    2% NaCl means 2g NaCl/100 ml solution.
    0.1g NaCl/2 mL is a 5% solution; therefore, this is not a dilution problem but a concentration problem. So you need to boil away x mL H2O to make the final volume what to make 5%.
    2%*(100/x) = 5%
    x = ?

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