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Thread: need chemistry help please

  1. 11th, June 2008, 06:43 PM #1
    love
    love is offline Active Member
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    need chemistry help please

    ok im totally dumb when it comes to chemistry and completly have no understanding of it, any ways i have this assignment to complete and the question is :

    In an experiment to determine the solubility of aspirin in ethanol it was found that 7.14g of aspirin could be dissolved in 50ml of ethanol at 20°C
    (c) use the data to calculate the solubility of aspirin in ethanol in SI units and also its concentration in mmol per litre

    please help
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  2. 11th, June 2008, 07:26 PM #2
    johnep
    johnep is offline Moderator
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    Re: need chemistry help please

    This means that 14.28 grms would dissolve in 100mls solvent. mmols are molecular weight in grms/litre so just multiply by 10 and then calculate MW of aspirin and do by simple proportion.
    johnep
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