margin: 0 .07em !important; 9H2O), 1.48g CuSO4 x 1 mol CuSO4 / 159.61g mol-1 CuSO4 = 0.009273 mol CuSO4, 1.47g H2O x 1 mol H2O / 18.02g mol-1 H2O = 0.08158 mol H2O, number of moles H2O / number of moles CuSO4, = 0.08158 mol / 0.009273 mol = 8.80 mol H2O / 1 mol CuSO4     (3 significant figures), 1.48g MgSO4 x 1 mol MgSO4 / 120.36g mol-1 MgSO4 = 0.01230 mol MgSO4, number of moles H2O / number of moles MgSO4, = 0.08158 mol / 0.01230 mol = 6.63 mol H2O / 1 mol MgSO4, 1.48g FeCl3 x 1 mol FeCl3 / 162.20g mol-1 FeCl3 = 0.009125 mol FeCl3, number of moles H2O / number of moles FeCl3, = 0.08158 mol / 0.009125 mol = 8.94 mol H2O / 1 mol FeCl3, 1.48g Fe(NO3)3 x 1 mol Fe(NO3)3 / 241.86g mol-1 Fe(NO3)3 = 0.006120 mol Fe(NO3)3, number of moles H2O / number of moles Fe(NO3)3, = 0.08158 mol / 0.006120 mol = 13.3 mol H2O / 1 mol Fe(NO3)3. 14. The class data … Hydrates are copper (II) sulfate and copper (II) nitrate. Mass of CuSO4 hydrate = 59.53 - … William weighs an empty beaker and finds it to have a mass of 95.83 g. After putting a spoonful of an unknown hydrate into the beaker, he finds that the mass has increased slightly to 99.87 g. He heats the beaker and its Prediction … Observing our nitrate, it has a white crystalline structure, representing that similar to table salt. Genie Francis Age, These are called hydrates. 2H 2O means there is 1 mole CaCl 2 to 2 moles H 2O. m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) This video is unavailable. Whirlpool Oven Manual Self-cleaning, Kimberly Graziano & Hyunjae Kim. Such compounds are called Purpose of heating empty crucible and lid. 6) For purposes of this experiment assume that the moles of water in the formula of the hydrate is a whole number. Determine the formula of the hydrate. These findings were a bit off due to some fragments of the, substance falling out of the crucible, causing a bit of experimental error. " /> This particular lab explores the relationship between the anhydrous salt and water in a hydrated sample; it helps students to better understand the concept of the Law of Definite Proportions. Thus, it gives the simplest ratio between the … Given that water has a much lower boiling point than copper sulfate, I hypothesize that we can heat it to remove the water, and then calculate the mass that was lost, based on measurements made before and after the water was evaporated. A change in weight is equivalent to the weight of water of crystallisation in the hydrated salt sample. 10H 2 O. Do not set crucibles on the lab bench for fear of contamination 3. Disposed of salt within the proper receptacle, cleaned crucible, and returned all equipment to its point of origin. 3.) Lab Report Formula of a Hydrated Salt Yicen, Wang 01/08/10 PURPOSED OBJECTIVE: The aim of the experiment is to calculate the relative ratio of moles of water per mole of the anhydrous salt in the formula that is given to us. Genie Francis Age, Please sign in or register to post comments. CuSO4 = 0.045 mole / 0.045 mole = 1 ( * 3) = 3. Magnesium sulfate, the only left option, is white in appearance which makes it a possible identification for our hydrate. Experiment 5- Percent Water in a Hydrated Salt Author-Kyla Battle Date-September 29, 2020 Objective(s)-To determine the percent by mass of water in a hydrated salt. Some ionic compounds are coordinated to a specific number of water molecules in solution. How To Wash Fuzzy Blanket, The formula for hydrated copper sulfate is: Possible improvements that could be made to this experiment in the future could include increasing the sample size, to produce a more average measurement. vertical-align: -0.1em !important; A change in appearance from crystalline to powdery form (sometimes accompanied by a change in color) may be observed as the process proceeds. This means that the formula for hydrated copper sulfate is: The goal of this experiment is to determine the percentage of water (by mass) in a hydrate, and to calculate the ratio of salt to water in a hydrated salt.

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