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    shanda2k11's Avatar
    shanda2k11 Posts: 1, Reputation: 1
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    #1

    Sep 30, 2011, 04:57 PM
    Hardness of water
    25.00mL of a tap water sample is titrated with 5.00 x 10^-3M EDTA solution.6.25mL is required to the endpoint .what is the hardness of the water in ppm
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 30, 2011, 11:11 PM
    Try it out yourself first. Write the equation for the reaction taking place and try to get the answer. Is you still have problems, come back and show what you tried so that we may know what is your exact problem.
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