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EXPERIMENT 7: HYDRATES. Introduction: You will determine the percentage of water in a hydrate and the empirical formula of a hydrated salt. Background: Hydrates are chemical compounds that contain water as part of their crystal structure.
- Experiment 4 Formula of a Hydrated Salt Introduction
Formula of a Hydrated Introduction. Sometimes salts combine...
- Experiment 4 Formula of a Hydrated Salt Introduction
7 Αυγ 2011 · The formula of the anhydrous salt is known, so its formula weight can be calculated. The weight of the material in the crucible after heating can then be used to determine the number of moles of the anhydrous salt. Comparing these two mole numbers gives the complete formula of the hydrated salt.
Formula of a Hydrated Introduction. Sometimes salts combine chemically with water and form hydrates in which a definite number of water molecules combine with the ions of a salt to form a crystal.
Design an experiment to accurately determine the empirical formula of a given hydrate. Predict how experimental factors will impact the accuracy and precision of results. Calculate the molar ratio of water to anhydrous solid to determine the hydrate's formula.
In this experiment, hydrated salts will be heated. First, we will perform a qualitative test with the hydrate CuSO 4.5H 2 O (blue in color), whereby heat is applied until the hydrate becomes anhydrous CuSO 4 (white in color). Next, the resulting liquid will be tested with anhydrous CoCl 2 to detect if that liquid is water.
This experiment determines the percent by weight of water in a hydrated salt and its formula. Procedure: Completion of at least 3 trials is suggested for this experiment. To use your time most efficiently, obtain 3 crucibles and lids, identify each crucible and lid as a matched pair, and simultaneously perform the experiment in triplicate.
Lab - Determining the Chemical Formula of a Hydrate. Some ionic compounds form crystalline structures that trap water molecules within the crystalline framework. They are known as “hydrated salts”, or simply, hydrates. Their formulas are written in two parts – the anhydrous salt, followed by some number of water molecules called the water ...
