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Asked by bookie c 25th December 2011, 3:49 PM
Answered by Expert
Law of reciprocal proportions states that "when two different elements separately combine with the fixed mass of third element, the proportion in which they combine with one another shall be either in the same ratio or some simple multiple of it". For example, when two elements C and O separately combine with H to form methane (CH4) and water (H2O) respectively; in methane 3g of C  combine with 1g of hydrogen, and in water (H2O) 8g of O combines with the same (fixed) mass i.e (1g) of H. Now when C and O combine with each other to form carbon dioxide (CO2), they do so in the same proportion i.e. 12:32 = 3:8 parts by mass.
Answered by Expert 26th December 2011, 10:08 AM
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