Question

The following experimental data were recorded for the dehydration of a different unknown hydrate, CoCl2 • n H2O.

The cation is cobalt and the anion is chloride.

Mass of test tube (dry) 8.7543 g

Mass of test tube + sample 8.9030 g

Mass of test tube + sample after heating 8.8350 g

 

What is the value of n in the empirical formula of the hydrate (CoCl2 • n H2O) rounded to the nearest integer?

Answer 1

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