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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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In the reaction Na2S(aq) + 2 HCl(aq) → 2 NaCl(aq) + H2S(g) the resulting solution weighs less than the sum of the original solutions because:
the chloride ion is heavier than the sulfide ion |
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some of the products escaped as a gas |
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the weights of solutions are not additive |
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some of the iron gets changed to hydrogen |
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this reaction is an exception to the Law of Conservation of Mass |
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