Equipment/Materials: Crucible (without lid), clay triangle or wire triangle, iron ring, ring stand, lab burner (Bunsen or Fisher), crucible tongs, electronic balance, heat pad, approx. Identity of the Hydrate: MgSO47H2O Magnesium heptahydrate, % Error = | (actual value - experimental value) / actual value | x 100%, = | (6.63 - 7.00) / (6.63) | x 100% = 5.58% Error. Chem 1A 04 Lab 6 Conductivity Chem 1A 04 Lab 4 Precipitation Chem 1A 04 Lab 1 Measurements Report Exam Winter 2020, questions Lab Report … Aspirin Synthesis and Analysis. We could have not gotten rid of the water in the hydrate to begin with as 15 minutes of heating was perhaps too short. However, there must be a few sources of errors that affected the data. Hydrate Lab – Examples of Good “Discussion of Theory” Sections. save Save Unknown Hydrate Lab For Later. The exact definition of a hydrate - any substance that contains some amount of water molecules in its structures - was illustrated in a precise way in this experiment. Before this, we had heard of this scientific word briefly in textbooks and in class, but we were never sure of its exact definition. As there is no simple way to predict the amount of water molecules in a hydrated compound, it must be determined by experimenting. We obtained the percentages through experimental procedures of reacting Ca(NO3)2 with Na2CO3 , filtrating and drying CaCO3. This experiment involves heating said hydrates … The number of water molecules in a hydrate is called the hydration number and it can be calculated using moles of water per mole of anhydrous compound. Aquariums that a hydrated experiment lab bench top cleaning oil in both negative ions and its molecular structure, on the assumption that. Testable Prediction: Our unknown hydrate may be a hydrate of copper(II) sulfate, magnesium sulfate, iron(III) chloride, or iron(III) nitrate. By using both quantitative and qualitative approaches, we can successfully predict the identity of the hydrate and its structure consisting of anhydrate and water. According to a smaller ratio compared to the expected ratio, more water was probably lost during this occurrence, which lowered the number of water moles. The error being only 5.58%, the overall ratio of water to magnesium sulfate was somewhat accurate. Students also viewed. For example, the ratio we got from an experiment for iron (III) nitrate was 13.3:1 while it should have been 9:1, according to the information from the resource. Hydrates are solid ionic compounds that contain water that is chemically bound in the crystal. The last idea we learned was how to apply the knowledge of colors of specific ions and solids. Once the numbers of moles of two substances are known, the ratio can be computed by dividing them. Types of Reactions Lab Report. Furthermore, in order to determine the exact name of the hydrate, we must find out the ratio between the anhydrate and water that are associated with the hydrate. By using both quantitative and qualitative approaches, we can successfully predict the identity of the hydrate and its structure consisting of anhydrate and water. Lab: Analysis Of a Hydrated Compound. Cecilia Evasco. lab chem 3. If the heating continued on for longer, more water could have evaporated to the air, leaving less amount of anhydrate left in the beaker. CuSO 4 • n H 2 O based on its consecutive masses. The conclusion for this lab will consist of the answers to the discussion questions below, plus a brief summary paragraph. 2018/2019. 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. ratio of water/salt (actual value, and then the closest integer) formula of hydrate. Unfamiliar with hydrates, we were first oblivious to how one could experimentally come up with a correct formula. = 0.08158 mol / 0.009273 mol = 8.80 mol H, = 0.08158 mol / 0.009125 mol = 8.94 mol H, = 0.08158 mol / 0.006120 mol = 13.3 mol H, | (actual value - experimental value) / actual value | x 100%, From this lab, we are able to conclude that our prediction was strongly supported in both terms. Our unknown hydrate may be a hydrate of copper(II) sulfate, magnesium sulfate, iron(III) chloride, or iron(III) nitrate. A loss in the amount of hydrate due to some popping out of the beaker while heating. The last idea we learned was how to apply the knowledge of colors of specific ions and solids. The ratios between molecules are in integers, but as this is an experiment, it will be more likely to acquire the ratio in decimal points. Introduction. Hydrate Lab Example #1. An insufficient amount of time for waiting until all water of the hydrate evaporated. Lab Report. Digication ePortfolio :: General Chemistry (Alexander Antonopoulos) by Alexander P. Antonopoulos at Salve Regina University. The purpose of this lab is for students to dehydrate a hydrate and use the mass data obtained in lab to calculate the number of moles of water that were attached to the hydrate. Print. 0 0. 2019/2020 Heat the content of the crucible with its … Some sources of deviation of the data may include: a. Share. Carousel Previous Carousel Next. The aim of experiments was to determine the percentage of water in hydrated Ca(NO3)2. In contrast, an anhydrate does not contain water, and has had all of its water removed. Purpose: The purpose of this experiment is to identify the unknown hydrate, selected by your teacher.
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