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Consider a mixture of the two solids, BaCl2 ∙ 2H2O (FM 244.26) and KCl (FM 74.551). When the mixture is heated to 160°C for 1 h, the water of crystallization is driven off: BaCl2 ∙ 2H2O(s)       BaCl2(s)  +  2H2O(g) A sample originally weighing 1.7839 g weighed 1.5623 g after heating.  Calculate wt% Ba, K, and Cl in the original sample.

Consider a mixture of the two solids, BaCl2 ∙ 2H2O (FM 244.26) and KCl (FM 74.551). When the mixture is heated to 160°C for 1 h, the water of crystallization is driven off: BaCl2 ∙ 2H2O(s)       BaCl2(s)  +  2H2O(g) A sample originally weighing 1.7839 g weighed 1.5623 g after heating.  Calculate wt% Ba, K, and Cl in the original sample.

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Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Consider a mixture of the two solids, BaCl2 ∙ 2H2O (FM 244.26) and KCl (FM 74.551). When the mixture is heated to 160°C for 1 h, the water of crystallization is driven off:

BaCl2 ∙ 2H2O(s)       BaCl2(s)  +  2H2O(g)

A sample originally weighing 1.7839 g weighed 1.5623 g after heating.  Calculate wt% Ba, K, and Cl in the original sample.  (Hint: The mass loss tells how much water was lost, which tells how much BaCl2 ∙ 2H2O was present.  The remainder of the sample is KCl.)

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