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    snehra1's Avatar
    snehra1 Posts: 3, Reputation: 1
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    #1

    Jan 20, 2007, 06:35 PM
    Chemical reaction
    Hi,

    Here is my question

    We have aqous solution of NaOH and Fe(No3)2 are mixed a red ppt form
    Fe3+ + 3OH- -------- Fe(oH)3
    What is mass of ppt when 50ml of .2M Ba(oH)2 mixed with an excess of .125 M Fe(No3)

    Please reply me asap
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Jan 21, 2007, 01:28 AM
    You need to calculate the number of moles of OH- you have, in the Ba(OH)2 solution, then use the equation to work out how many moles of Fe(OH)3 you get. From this you can work out the mass of Fe(OH)3 you will get
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