1.

61.8 g of A combine with 80 g of B. 30.9 g of A combine with 106.5 g of C. B and C combine to form compound CB_(2). Atomic weights of C and B are respectively 35.5 and 6.6. Show that the law of reciprocal proportions is obeyed.

Answer»

Solution :
MASS of B combining with 1 g of A `=(80)/(61.8)=1.26g`
Mass of C combining with 1 g of A `=(106.5)/(30.9)=3.45g`
Ratio of masses of B and C combining with FIXED mass of A `=1.29:3.45=1:2.67=3:8`
Ratio of masses of B and C combining DIRECTLY with each other `=13.2:35.3=1:2.67=3:8`
Thus, the two rations are same.


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