If law of constant composition is true, what weights of calcium, carbon and oxygen are present in 1.5 g fo calcium carbonate? Given that a sample of calcium carbonate from another sample contains the following percentage composition:
Ca = 40.0%; C = 12.0%; O= 48.0%

Solution

As the law of constant composition is true, therefore, the percentage of the elements in the two samples of calcium carbonate must be same.

Weight space of space calcium space equals space fraction numerator 1.5 space cross times space 40 over denominator 100 end fraction space equals space 0.6 space straight g Weight space of space carbon space equals space fraction numerator 1.5 space cross times space 12 over denominator 100 end fraction space equals space 0.18 space straight g Weight space of space oxygen space space equals space fraction numerator 1.5 space cross times 48 over denominator 100 end fraction space equals space 0.72 space straight g

Some More Questions From Some Basic Concepts of Chemistry Chapter

For Daily Free Study Material Join wiredfaculty