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20 Jan 2021

Determining the Formula of a Hydrate. Tetraamminecopper(II) Sulfate Monohydrate Cu(NH3)4SO4 • H2O bulk & research qty manufacturer. Hydrate Lab. Here we are in the lab after dehydrating some iron (III) chloride salts. Using crucible tongs, clean a porcelain crucible and its cover using concentrated nitric acid (6 M). Now it's time for data analysis. Determine the percent of water in the hydrate: _____ (Hint: Use percent compositon formula in Table T of reference table): 3. 2 Determining the formula of a hydrate lab. The lab work has two objectives: first, confirm the formula of a hydrate with known formula and second, find the formula of a hydrate in which the salt formula is known but not the molar amount of water. Name: _ Patel Maitrykumari Determining Chemical Formula of Hydrate Pre-Lab Questions: 1.What is the We want to determine the formula for a hydrate of iron (III) chloride, FeCl 3 nH 2 O. Lab - Determining the Chemical Formula of a Hydrate Some ionic compounds form crystalline structures that trap water molecules within the crystalline framework. The actual hydrate formula for the copper (II) sulfate compound was CuSO4+5H2O. Their formulas are written in two The ratio of water molecules to the anhydrous salt is constant. Overview. Determine the mass of Water in the hydrate: _____ 2. This lab activity combines in-class problem-solving with lab work. View Lab Report-Determinining Formula of Hydrate.201930 (5).docx from CHEM 1411 at Collin College. Part D: Determination of the formula of a hydrate. Pour the … x H 2 O, will be studied. A hydrate is an ionic compound that has a definite amount of water molecules attached to its crystalline structure. Experimental Question: How can we experimentally determine the formula of an unknown hydrate, A? TIP: Click this link to fix system errors and boost system speed Copper (II) sulfate pentahydrate is an example of such a hydrate. Observing our nitrate, it has a white crystalline structure, representing that similar to table salt. Purpose: The purpose of this lab is to ensure that the student understands the procedure of heating to constant mass and to determine from experimental data the number of moles of water released by a hydrate and infer the chemical formula of the hydrate. Kimberly Graziano & Hyunjae Kim. 1. while heating the hydrate so as to remove all water content, it is possible that complete heating did not take place and the student stopped heating before complete removal of water. These compounds are called hydrates. 14457-55-7. They are known as “hydrated salts”, or simply, hydrates. The five in front of the water formula show that 5 water molecules (or 5 moles of water per mole of CuSO4) are present per unit of the CuSO4 formula. Effect : this will cause decreased number of moles of water, thereby decreaing the water of crystallization present in the formula. Chemistry I—Lab: Determining the Chemical Formula of a Hydrate. The class average for the percentage of water in the hydrated copper (II) sulfate compound was 28.79%. Many compounds exist as hydrates. A wide variety of hydrate formula options are available to you, such as sulphate, sulfide, and chemical auxiliary agent. Purpose. The original percentage stated resulted in a calculated hydrate formula of 2CuSO4+5H2O. Testable Prediction: Our unknown hydrate may be a hydrate of copper(II) sulfate, magnesium sulfate, iron(III) chloride, or iron(III) nitrate. Its formula is CuSO4 5H2O. 1. Determine the number of moles of H20 in the hydrate: _____ (Hint: First determine GFM then use mole calculation in Table T of reference table) 4. We were trying to determine the mass of the hydrate, anhydrous salt, and water, as well as the empirical formulas for Copper (II) Sulfate (CuSO4). 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