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A student carries out an experiment to determine the amount of water of crystallisation in the formula of hydrated salt. The student intends to remove the water by heating the hydrated salt.
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.
7 Ιουν 2024 · The degree of hydration can be calculated from experimental results: The mass of the hydrated salt must be measured before heating; The salt is then heated until it reaches a constant mass; The two mass values can be used to calculate the number of moles of water in the hydrated salt - known as the water of crystallisation
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.
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.
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.
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.
