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Sydney V.

asked • 03/17/19

If 1000. g of calcium carbonate reacts with 750. g of hydrochloric acid, what is the theoretical yield of calcium chloride according to this reaction?

____CaCO3 + _____HCl ---> _____CaCl2 + _____H2O + _____CO2

1 Expert Answer

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Catherine G. answered • 03/17/19

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J.R. S.

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750. g has only tgree sig figs.
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03/17/19

Catherine G.

Yes, but 750. Is not used in the calculation that determined the yield.
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03/18/19

Catherine G.

So according to the text, "General Chemistry" by Hill, et al. , "In multiplication and division, the reported result should have no more significant figures than the factor with the fewest significant figures." I have found nothing to contradict this. When looking at the multiplication line for the 1000. g answer, all the significant figures were 4 and greater, 1000. is 4, 100.09 is 5, 100.98 is 5. Therefore the accuracy of the answer is acceptable to four digits.
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03/18/19

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