MCAT Question of the Day
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    Q:

    		 In thin-layer chromatography using a cellulose matrix, a mobile phase with a 1:9 ratio of ethyl acetate : petroleum ether is used on the compound shown below. If a solvent ratio of 3:7 ethyl acetate : petroleum ether were used instead, what would happen to the Rf value of the compound?



    		 

    A

    		 It would increase, because the polarity of the mobile phase is increasing

    B

    		 It would increase, because the polarity of the mobile phase is decreasing

    C

    		 It would decrease, because the polarity of the mobile phase is increasing

    D

    		 It would decrease, because the polarity of the mobile phase is decreasing



    Separation and Purification |
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